{"id":16502,"date":"2026-09-13T21:55:02","date_gmt":"2026-09-13T18:55:02","guid":{"rendered":"https:\/\/www.ihs.com.tr\/blog\/?p=16502"},"modified":"2026-09-13T21:55:02","modified_gmt":"2026-09-13T18:55:02","slug":"en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri","status":"publish","type":"post","link":"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/","title":{"rendered":"En S\u0131k Yap\u0131lan DNS Yap\u0131land\u0131rma Hatalar\u0131 ve \u00c7\u00f6z\u00fcmleri"},"content":{"rendered":"<p>\u0130nternet d\u00fcnyas\u0131n\u0131n temel ta\u015flar\u0131ndan biri olan DNS (Domain Name System), kullan\u0131c\u0131lar\u0131n karma\u015f\u0131k IP adresleri yerine ak\u0131lda kal\u0131c\u0131 alan adlar\u0131 kullanarak web sitelerine eri\u015fmesini sa\u011flar. Ancak bu kritik sistemde yap\u0131lan en k\u00fc\u00e7\u00fck bir yap\u0131land\u0131rma hatas\u0131 bile web sitenizin tamamen eri\u015filemez olmas\u0131na, e-posta ileti\u015fiminizin durmas\u0131na veya ciddi g\u00fcvenlik a\u00e7\u0131klar\u0131 olu\u015fmas\u0131na neden olabilir. Bu makalede, en s\u0131k kar\u015f\u0131la\u015f\u0131lan DNS yap\u0131land\u0131rma hatalar\u0131n\u0131, bu hatalar\u0131n web siteniz ve e-posta sisteminiz \u00fczerindeki etkilerini ve pratik \u00e7\u00f6z\u00fcm yollar\u0131n\u0131 detayl\u0131 bir \u015fekilde ele alaca\u011f\u0131z. Do\u011fru yap\u0131land\u0131r\u0131lm\u0131\u015f bir DNS&#8217;in, dijital varl\u0131\u011f\u0131n\u0131z\u0131n performans\u0131, g\u00fcvenli\u011fi ve itibar\u0131 i\u00e7in ne kadar hayati oldu\u011funu ke\u015ffedeceksiniz.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_77 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0130\u00e7erik Tablosu<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6aa712aaa007c\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\" id=\"ez-toc-cssicon-toggle-item-6aa712aaa007c\" aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#DNSin-Temelleri-ve-Web-Ekosistemindeki-Rolu\" >DNS&#8217;in Temelleri ve Web Ekosistemindeki Rol\u00fc<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#DNS-Nedir-ve-Nasil-Calisir\" >DNS Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Temel-DNS-Kayit-Turleri-A-CNAME-MX-NS-TXT-ve-Islevleri\" >Temel DNS Kay\u0131t T\u00fcrleri (A, CNAME, MX, NS, TXT) ve \u0130\u015flevleri<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Dogru-DNS-Yapilandirmasinin-Web-Sitesi-Performansi-ve-Guvenligine-Etkisi\" >Do\u011fru DNS Yap\u0131land\u0131rmas\u0131n\u0131n Web Sitesi Performans\u0131 ve G\u00fcvenli\u011fine Etkisi<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Sik-Karsilasilan-Kayit-Duzeyi-Hatalar-ve-Cozumleri\" >S\u0131k Kar\u015f\u0131la\u015f\u0131lan Kay\u0131t D\u00fczeyi Hatalar ve \u00c7\u00f6z\u00fcmleri<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Eksik-veya-Yanlis-A-Kaydi-Web-Sitesine-Erisilememesi\" >Eksik veya Yanl\u0131\u015f A Kayd\u0131: Web Sitesine Eri\u015filememesi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Yanlis-Yapilandirilmis-MX-Kayitlari-E-posta-AlimGonderim-Sorunlari\" >Yanl\u0131\u015f Yap\u0131land\u0131r\u0131lm\u0131\u015f MX Kay\u0131tlar\u0131: E-posta Al\u0131m\/G\u00f6nderim Sorunlar\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Hatali-CNAME-Kaydi-Kullanimi-Alt-Alan-Adi-Subdomain-Yonlendirme-Hatalari\" >Hatal\u0131 CNAME Kayd\u0131 Kullan\u0131m\u0131: Alt Alan Ad\u0131 (Subdomain) Y\u00f6nlendirme Hatalar\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Eksik-veya-Hatali-PTR-Kaydi-Ters-DNS-Cozumleme-ve-E-posta-Guvenilirligi\" >Eksik veya Hatal\u0131 PTR Kayd\u0131: Ters DNS \u00c7\u00f6z\u00fcmleme ve E-posta G\u00fcvenilirli\u011fi<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#E-posta-Guvenligi-ile-Ilgili-DNS-Yapilandirma-Hatalari\" >E-posta G\u00fcvenli\u011fi ile \u0130lgili DNS Yap\u0131land\u0131rma Hatalar\u0131<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Eksik-SPF-Sender-Policy-Framework-Kaydi\" >Eksik SPF (Sender Policy Framework) Kayd\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Eksik-DKIM-DomainKeys-Identified-Mail-Kaydi\" >Eksik DKIM (DomainKeys Identified Mail) Kayd\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Yapilandirilmamis-DMARC-Domain-based-Message-Authentication-Reporting-Conformance-Kaydi\" >Yap\u0131land\u0131r\u0131lmam\u0131\u015f DMARC (Domain-based Message Authentication, Reporting &#038; Conformance) Kayd\u0131<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Genel-ve-Yapisal-DNS-Hatalari\" >Genel ve Yap\u0131sal DNS Hatalar\u0131<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Yanlis-Yapilandirilmis-NS-Name-Server-Kayitlari\" >Yanl\u0131\u015f Yap\u0131land\u0131r\u0131lm\u0131\u015f NS (Name Server) Kay\u0131tlar\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Cok-Dusuk-veya-Cok-Yuksek-TTL-Time-To-Live-Degerleri\" >\u00c7ok D\u00fc\u015f\u00fck veya \u00c7ok Y\u00fcksek TTL (Time To Live) De\u011ferleri<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Eksik-%E2%80%9CGlue%E2%80%9D-Kayitlari-ve-Cozumleneme-Donguleri\" >Eksik &#8220;Glue&#8221; Kay\u0131tlar\u0131 ve \u00c7\u00f6z\u00fcmleneme D\u00f6ng\u00fcleri<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Wildcard-DNS-Kayitlarinin-Kontrolsuz-Kullanimi\" >Wildcard (*) DNS Kay\u0131tlar\u0131n\u0131n Kontrols\u00fcz Kullan\u0131m\u0131<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#DNS-Hatalarini-Teshis-Etme-ve-Onleme-Yontemleri\" >DNS Hatalar\u0131n\u0131 Te\u015fhis Etme ve \u00d6nleme Y\u00f6ntemleri<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Online-DNS-Kontrol-Araclari-DNS-Checker-MXToolBox-vb\" >Online DNS Kontrol Ara\u00e7lar\u0131 (DNS Checker, MXToolBox vb.)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Komut-Satiri-Araclari-ile-Manuel-Kontrol\" >Komut Sat\u0131r\u0131 Ara\u00e7lar\u0131 ile Manuel Kontrol<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Hatalari-Onlemek-Icin-En-Iyi-Uygulamalar\" >Hatalar\u0131 \u00d6nlemek \u0130\u00e7in En \u0130yi Uygulamalar<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Guvenilir-DNS-Yonetimi-Icin-Neden-IHS-Telekomu-Tercih-Etmelisiniz\" >G\u00fcvenilir DNS Y\u00f6netimi \u0130\u00e7in Neden \u0130HS Telekom&#8217;u Tercih Etmelisiniz?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#724-Uzman-Teknik-Destek-ve-Sorun-Cozumu\" >7\/24 Uzman Teknik Destek ve Sorun \u00c7\u00f6z\u00fcm\u00fc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Gelismis-ve-Kullanici-Dostu-DNS-Yonetim-Paneli\" >Geli\u015fmi\u015f ve Kullan\u0131c\u0131 Dostu DNS Y\u00f6netim Paneli<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Yedekli-ve-Yuksek-Performansli-DNS-Altyapisi\" >Yedekli ve Y\u00fcksek Performansl\u0131 DNS Altyap\u0131s\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#Tek-Tikla-SPF-DKIM-ve-DMARC-Kayit-Yonetimi\" >Tek T\u0131kla SPF, DKIM ve DMARC Kay\u0131t Y\u00f6netimi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.ihs.com.tr\/blog\/en-sik-yapilan-dns-yapilandirma-hatalari-ve-cozumleri\/#DNSSEC-Destegi-ile-Ekstra-Guvenlik-Katmani\" >DNSSEC Deste\u011fi ile Ekstra G\u00fcvenlik Katman\u0131<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"DNSin-Temelleri-ve-Web-Ekosistemindeki-Rolu\"><\/span>DNS&#8217;in Temelleri ve Web Ekosistemindeki Rol\u00fc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>DNS, internetin telefon rehberi olarak d\u00fc\u015f\u00fcn\u00fclebilir. Taray\u0131c\u0131n\u0131za bir web sitesi adresi yazd\u0131\u011f\u0131n\u0131zda, DNS bu alan ad\u0131n\u0131 sitenin bar\u0131nd\u0131r\u0131ld\u0131\u011f\u0131 sunucunun IP adresine \u00e7evirerek sizi do\u011fru hedefe y\u00f6nlendirir. Bu anl\u0131k \u00e7eviri i\u015flemi olmadan, her web sitesi i\u00e7in uzun ve karma\u015f\u0131k IP adreslerini ezberlemek zorunda kal\u0131rd\u0131k. Bu temel i\u015flev, DNS&#8217;in modern web ekosistemindeki vazge\u00e7ilmez rol\u00fcn\u00fc ortaya koyar.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"DNS-Nedir-ve-Nasil-Calisir\"><\/span>DNS Nedir ve Nas\u0131l \u00c7al\u0131\u015f\u0131r?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DNS, &#8220;Domain Name System&#8221; ifadesinin k\u0131saltmas\u0131d\u0131r ve hiyerar\u015fik bir yap\u0131ya sahip da\u011f\u0131t\u0131k bir veritaban\u0131 sistemidir. Bir kullan\u0131c\u0131 bir <a href=\"https:\/\/www.ihs.com.tr\/domain\/alan-adi-domain-tescili.html\" target=\"_blank\">domain<\/a> ad\u0131n\u0131 sorgulad\u0131\u011f\u0131nda, bu istek \u00f6nce yerel DNS \u00e7\u00f6z\u00fcmleyicisine (genellikle internet servis sa\u011flay\u0131c\u0131s\u0131 taraf\u0131ndan sa\u011flan\u0131r) gider. E\u011fer \u00e7\u00f6z\u00fcmleyici bu bilginin kayd\u0131na sahip de\u011filse, k\u00f6k (root) sunuculardan ba\u015flayarak ilgili TLD (Top-Level Domain, .com, .net gibi) sunucular\u0131na ve son olarak alan ad\u0131n\u0131n yetkili ad sunucusuna (Authoritative Name Server) kadar bir dizi sorgu yapar. Yetkili sunucu, istenen kayd\u0131n (\u00f6rne\u011fin IP adresi) nihai bilgisini verir ve bu bilgi kullan\u0131c\u0131ya ula\u015ft\u0131r\u0131larak ba\u011flant\u0131 sa\u011flan\u0131r. Bu karma\u015f\u0131k s\u00fcre\u00e7, milisaniyeler i\u00e7inde ger\u00e7ekle\u015fir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Temel-DNS-Kayit-Turleri-A-CNAME-MX-NS-TXT-ve-Islevleri\"><\/span>Temel DNS Kay\u0131t T\u00fcrleri (A, CNAME, MX, NS, TXT) ve \u0130\u015flevleri<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DNS sistemi, farkl\u0131 ama\u00e7lara hizmet eden \u00e7e\u015fitli kay\u0131t t\u00fcrleri kullan\u0131r. Her bir kay\u0131t, alan ad\u0131n\u0131zla ilgili farkl\u0131 bir bilgiyi depolar ve belirli bir i\u015flevi yerine getirir. En temel ve s\u0131k kullan\u0131lan kay\u0131t t\u00fcrleri \u015funlard\u0131r:<\/p>\n<div class=\"karsilastirma\">\n<table>\n<thead>\n<tr>\n<th>Kay\u0131t T\u00fcr\u00fc<\/th>\n<th>\u0130\u015flevi<\/th>\n<th>\u00d6rnek De\u011fer<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>A Kayd\u0131 (Address)<\/strong><\/td>\n<td>Bir alan ad\u0131n\u0131 veya alt alan ad\u0131n\u0131 bir IPv4 adresine y\u00f6nlendirir. Web sitesinin ana kayd\u0131d\u0131r.<\/td>\n<td>example.com -> 192.0.2.1<\/td>\n<\/tr>\n<tr>\n<td><strong>CNAME Kayd\u0131 (Canonical Name)<\/strong><\/td>\n<td>Bir alan ad\u0131n\u0131 veya alt alan ad\u0131n\u0131 ba\u015fka bir alan ad\u0131na y\u00f6nlendirir (alias).<\/td>\n<td>blog.example.com -> example.com<\/td>\n<\/tr>\n<tr>\n<td><strong>MX Kayd\u0131 (Mail Exchange)<\/strong><\/td>\n<td>Alan ad\u0131na g\u00f6nderilen e-postalar\u0131n hangi posta sunucusuna y\u00f6nlendirilece\u011fini belirtir.<\/td>\n<td>example.com -> mail.example.com (\u00d6ncelik: 10)<\/td>\n<\/tr>\n<tr>\n<td><strong>NS Kayd\u0131 (Name Server)<\/strong><\/td>\n<td>Bir alan ad\u0131 i\u00e7in yetkili DNS sunucular\u0131n\u0131n hangileri oldu\u011funu belirtir.<\/td>\n<td>example.com -> ns1.ihs.com.tr, ns2.ihs.com.tr<\/td>\n<\/tr>\n<tr>\n<td><strong>TXT Kayd\u0131 (Text)<\/strong><\/td>\n<td>Alan ad\u0131yla ilgili metin tabanl\u0131 bilgiler i\u00e7erir. SPF, DKIM ve DMARC gibi do\u011frulama kay\u0131tlar\u0131 i\u00e7in kullan\u0131l\u0131r.<\/td>\n<td>example.com -> &#8220;v=spf1 include:_spf.google.com ~all&#8221;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"Dogru-DNS-Yapilandirmasinin-Web-Sitesi-Performansi-ve-Guvenligine-Etkisi\"><\/span>Do\u011fru DNS Yap\u0131land\u0131rmas\u0131n\u0131n Web Sitesi Performans\u0131 ve G\u00fcvenli\u011fine Etkisi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DNS yap\u0131land\u0131rmas\u0131 sadece web sitenize eri\u015fimi sa\u011flamakla kalmaz, ayn\u0131 zamanda performans\u0131 ve g\u00fcvenli\u011fi de do\u011frudan etkiler. Co\u011frafi olarak da\u011f\u0131t\u0131lm\u0131\u015f, y\u00fcksek performansl\u0131 DNS sunucular\u0131 kullanmak, web sitenizin daha h\u0131zl\u0131 y\u00fcklenmesini sa\u011flar. \u00d6te yandan, yanl\u0131\u015f yap\u0131land\u0131r\u0131lm\u0131\u015f veya eksik g\u00fcvenlik kay\u0131tlar\u0131 (SPF, DKIM gibi), alan ad\u0131n\u0131z\u0131n e-posta sahtekarl\u0131\u011f\u0131 i\u00e7in kullan\u0131lmas\u0131na zemin haz\u0131rlayabilir. Ayr\u0131ca, DNSSEC gibi teknolojilerle DNS sorgular\u0131n\u0131 g\u00fcvence alt\u0131na almak, siber sald\u0131r\u0131lara kar\u015f\u0131 ek bir koruma katman\u0131 sa\u011flar.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Sik-Karsilasilan-Kayit-Duzeyi-Hatalar-ve-Cozumleri\"><\/span>S\u0131k Kar\u015f\u0131la\u015f\u0131lan Kay\u0131t D\u00fczeyi Hatalar ve \u00c7\u00f6z\u00fcmleri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>DNS kay\u0131tlar\u0131, web sitenizin ve e-posta hizmetlerinizin bel kemi\u011fidir. Bu kay\u0131tlardaki en ufak bir hata, ciddi eri\u015fim ve ileti\u015fim sorunlar\u0131na yol a\u00e7abilir. Bu b\u00f6l\u00fcmde, kay\u0131t d\u00fczeyinde en s\u0131k yap\u0131lan hatalar\u0131 ve bu hatalar\u0131 nas\u0131l giderebilece\u011finizi ad\u0131m ad\u0131m inceleyece\u011fiz.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Eksik-veya-Yanlis-A-Kaydi-Web-Sitesine-Erisilememesi\"><\/span>Eksik veya Yanl\u0131\u015f A Kayd\u0131: Web Sitesine Eri\u015filememesi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>En temel ve kritik DNS kayd\u0131 olan A kayd\u0131, alan ad\u0131n\u0131z\u0131 bar\u0131nd\u0131rma hizmeti ald\u0131\u011f\u0131n\u0131z sunucunun IP adresiyle e\u015fle\u015ftirir.<\/p>\n<h4>Hatan\u0131n Belirtileri ve Tespiti<\/h4>\n<p>Bu hatan\u0131n en belirgin belirtisi, kullan\u0131c\u0131lar\u0131n taray\u0131c\u0131lar\u0131na alan ad\u0131n\u0131z\u0131 yazd\u0131klar\u0131nda &#8220;Bu siteye ula\u015f\u0131lam\u0131yor&#8221; veya &#8220;Sunucu IP adresi bulunamad\u0131&#8221; gibi hatalarla kar\u015f\u0131la\u015fmas\u0131d\u0131r. Bu durumu tespit etmek i\u00e7in <a href=\"https:\/\/www.ihs.com.tr\/whois-sorgulama\" target=\"_blank\">whois sorgulama<\/a> ara\u00e7lar\u0131 veya online DNS denetleyicileri kullanarak A kayd\u0131n\u0131z\u0131n hangi IP adresini g\u00f6sterdi\u011fini kontrol edebilirsiniz.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: Do\u011fru IP Adresinin A Kayd\u0131na Girilmesi<\/h4>\n<p>\u00c7\u00f6z\u00fcm, <a href=\"https:\/\/www.ihs.com.tr\/web-hosting\/\" target=\"_blank\">hosting<\/a> sa\u011flay\u0131c\u0131n\u0131z\u0131n size atad\u0131\u011f\u0131 do\u011fru IP adresini bulmak ve DNS y\u00f6netim paneliniz \u00fczerinden A kayd\u0131n\u0131 bu IP adresi ile g\u00fcncellemektir. De\u011fi\u015fikli\u011fin internet genelinde yay\u0131lmas\u0131 TTL s\u00fcresine ba\u011fl\u0131 olarak biraz zaman alabilir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Yanlis-Yapilandirilmis-MX-Kayitlari-E-posta-AlimGonderim-Sorunlari\"><\/span>Yanl\u0131\u015f Yap\u0131land\u0131r\u0131lm\u0131\u015f MX Kay\u0131tlar\u0131: E-posta Al\u0131m\/G\u00f6nderim Sorunlar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>MX kay\u0131tlar\u0131, alan ad\u0131n\u0131za g\u00f6nderilen e-postalar\u0131n hangi sunuculara teslim edilece\u011fini belirler ve do\u011fru yap\u0131land\u0131r\u0131lmalar\u0131 e-posta ileti\u015fiminin s\u00fcreklili\u011fi i\u00e7in hayati \u00f6nem ta\u015f\u0131r.<\/p>\n<h4>Hatan\u0131n Belirtileri: Gelen E-postalar\u0131n Kaybolmas\u0131<\/h4>\n<p>E\u011fer insanlar size e-posta g\u00f6nderdi\u011finde &#8220;teslim edilemedi&#8221; geri bildirimleri al\u0131yorlarsa veya gelen kutunuza hi\u00e7bir e-posta d\u00fc\u015fm\u00fcyorsa, b\u00fcy\u00fck olas\u0131l\u0131kla MX kay\u0131tlar\u0131n\u0131zda bir sorun vard\u0131r. Hatal\u0131 sunucu adresi veya yanl\u0131\u015f \u00f6ncelik de\u011feri, e-postalar\u0131n yanl\u0131\u015f sunuculara y\u00f6nlendirilmesine veya tamamen kaybolmas\u0131na neden olabilir.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: MX Kayd\u0131 \u00d6ncelik (Priority) De\u011ferlerinin ve Sunucu Adreslerinin D\u00fczeltilmesi<\/h4>\n<p>E-posta servis sa\u011flay\u0131c\u0131n\u0131z\u0131n size verdi\u011fi do\u011fru MX sunucu adreslerini ve bunlara ait \u00f6ncelik (priority) de\u011ferlerini DNS y\u00f6netim panelinize girmeniz gerekir. Genellikle daha d\u00fc\u015f\u00fck \u00f6ncelik de\u011feri, daha \u00f6ncelikli sunucu anlam\u0131na gelir. Yedek sunucular i\u00e7in daha y\u00fcksek de\u011ferler kullan\u0131l\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hatali-CNAME-Kaydi-Kullanimi-Alt-Alan-Adi-Subdomain-Yonlendirme-Hatalari\"><\/span>Hatal\u0131 CNAME Kayd\u0131 Kullan\u0131m\u0131: Alt Alan Ad\u0131 (Subdomain) Y\u00f6nlendirme Hatalar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>CNAME kay\u0131tlar\u0131, bir alt alan ad\u0131n\u0131 ba\u015fka bir alan ad\u0131na y\u00f6nlendirmek i\u00e7in kullan\u0131l\u0131r ve genellikle harici servislerle entegrasyon i\u00e7in pratik bir y\u00f6ntemdir.<\/p>\n<h4>Hatan\u0131n Belirtileri: Beklenmedik Y\u00f6nlendirmeler veya Eri\u015filemeyen Alt Alan Adlar\u0131<\/h4>\n<p>\u00d6rne\u011fin, &#8220;blog.alanadiniz.com&#8221; adresini farkl\u0131 bir platforma y\u00f6nlendirmek isterken yap\u0131lan bir hata, bu alt alan ad\u0131na eri\u015filememesine veya tamamen yanl\u0131\u015f bir hedefe y\u00f6nlenmesine sebep olabilir. En yayg\u0131n hata, ana alan ad\u0131na (root domain) CNAME kayd\u0131 olu\u015fturmaya \u00e7al\u0131\u015fmakt\u0131r ki bu, DNS standartlar\u0131na ayk\u0131r\u0131d\u0131r ve e-posta gibi di\u011fer servislerin \u00e7al\u0131\u015fmas\u0131n\u0131 engelleyebilir.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: CNAME Kayd\u0131n\u0131n Do\u011fru Kullan\u0131m Kurallar\u0131na Uygun Yap\u0131land\u0131r\u0131lmas\u0131<\/h4>\n<p>CNAME kay\u0131tlar\u0131 yaln\u0131zca alt alan adlar\u0131 i\u00e7in kullan\u0131lmal\u0131d\u0131r. Hedef olarak bir IP adresi de\u011fil, ba\u015fka bir ge\u00e7erli alan ad\u0131 girilmelidir. E\u011fer bir alt alan ad\u0131 i\u00e7in MX veya NS gibi ba\u015fka kay\u0131tlar varsa, o alt alan ad\u0131na CNAME kayd\u0131 eklenemez. \u00d6rne\u011fin, &#8220;mail.alanadiniz.com&#8221; hem CNAME hem de MX kayd\u0131na sahip olamaz.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Eksik-veya-Hatali-PTR-Kaydi-Ters-DNS-Cozumleme-ve-E-posta-Guvenilirligi\"><\/span>Eksik veya Hatal\u0131 PTR Kayd\u0131: Ters DNS \u00c7\u00f6z\u00fcmleme ve E-posta G\u00fcvenilirli\u011fi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>PTR (Pointer) kayd\u0131, bir IP adresini bir alan ad\u0131na \u00e7\u00f6z\u00fcmleyen &#8220;ters&#8221; DNS kayd\u0131d\u0131r ve \u00f6zellikle e-posta sunucular\u0131n\u0131n g\u00fcvenilirli\u011fi i\u00e7in \u00f6nemlidir.<\/p>\n<h4>Hatan\u0131n Belirtileri: G\u00f6nderilen E-postalar\u0131n Spam Olarak \u0130\u015faretlenmesi<\/h4>\n<p>E\u011fer g\u00f6nderdi\u011finiz e-postalar al\u0131c\u0131lar\u0131n spam klas\u00f6r\u00fcne d\u00fc\u015f\u00fcyorsa, bunun nedeni eksik veya hatal\u0131 bir PTR kayd\u0131 olabilir. Bir\u00e7ok e-posta sunucusu, gelen e-postan\u0131n g\u00f6nderildi\u011fi IP adresi i\u00e7in bir PTR sorgusu yapar ve bu sorgu, g\u00f6nderen alan ad\u0131yla e\u015fle\u015fmezse e-postay\u0131 \u015f\u00fcpheli olarak i\u015faretler.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: Sunucu IP Adresi \u0130\u00e7in Do\u011fru PTR Kayd\u0131n\u0131n Olu\u015fturulmas\u0131<\/h4>\n<p>PTR kayd\u0131, normal DNS kay\u0131tlar\u0131n\u0131n aksine, IP adresinin sahibi olan veri merkezi veya <a href=\"https:\/\/www.ihs.com.tr\/sunucu-kiralama\/\" target=\"_blank\">sunucu<\/a> sa\u011flay\u0131c\u0131s\u0131 taraf\u0131ndan y\u00f6netilir. Bu nedenle, sunucunuzun IP adresi i\u00e7in do\u011fru PTR kayd\u0131n\u0131n (genellikle mail sunucunuzun ad\u0131) olu\u015fturulmas\u0131 i\u00e7in servis sa\u011flay\u0131c\u0131n\u0131zla <a href=\"https:\/\/www.ihs.com.tr\/kurumsal\/iletisim.html\" target=\"_blank\">ileti\u015fim<\/a> kurman\u0131z gerekir.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"E-posta-Guvenligi-ile-Ilgili-DNS-Yapilandirma-Hatalari\"><\/span>E-posta G\u00fcvenli\u011fi ile \u0130lgili DNS Yap\u0131land\u0131rma Hatalar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>E-posta, i\u015f d\u00fcnyas\u0131n\u0131n can damar\u0131d\u0131r ve g\u00fcvenli\u011fi b\u00fcy\u00fck \u00f6l\u00e7\u00fcde DNS&#8217;e ba\u011fl\u0131d\u0131r. SPF, DKIM ve DMARC gibi \u00f6zel DNS kay\u0131tlar\u0131, alan ad\u0131n\u0131z\u0131n sahtekarl\u0131k (spoofing) i\u00e7in kullan\u0131lmas\u0131n\u0131 \u00f6nler ve e-posta itibar\u0131n\u0131z\u0131 korur. Bu kay\u0131tlar\u0131n eksikli\u011fi veya yanl\u0131\u015f yap\u0131land\u0131r\u0131lmas\u0131, ciddi g\u00fcvenlik riskleri olu\u015fturur.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Eksik-SPF-Sender-Policy-Framework-Kaydi\"><\/span>Eksik SPF (Sender Policy Framework) Kayd\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>SPF, alan ad\u0131n\u0131z ad\u0131na hangi sunucular\u0131n e-posta g\u00f6ndermeye yetkili oldu\u011funu beyan eden bir TXT kayd\u0131d\u0131r.<\/p>\n<h4>Hatan\u0131n Sonu\u00e7lar\u0131: E-posta Sahtekarl\u0131\u011f\u0131 (Spoofing) ve \u0130tibar Kayb\u0131<\/h4>\n<p>E\u011fer bir SPF kayd\u0131n\u0131z yoksa, siber su\u00e7lular alan ad\u0131n\u0131z\u0131 kullanarak sahte e-postalar g\u00f6nderebilir. Bu durum, markan\u0131z\u0131n itibar\u0131n\u0131 zedeler, m\u00fc\u015fterilerinizin doland\u0131r\u0131lmas\u0131na yol a\u00e7abilir ve g\u00f6nderdi\u011finiz me\u015fru e-postalar\u0131n da spam olarak i\u015faretlenmesine neden olabilir.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: Alan Ad\u0131 Ad\u0131na E-posta G\u00f6ndermeye Yetkili Sunucular\u0131 Belirten SPF Kayd\u0131 Olu\u015fturma<\/h4>\n<p>DNS y\u00f6netim panelinizde bir TXT kayd\u0131 olu\u015fturarak, e-posta g\u00f6nderimi i\u00e7in kulland\u0131\u011f\u0131n\u0131z t\u00fcm IP adreslerini ve servisleri (\u00f6rne\u011fin, Google Workspace, Microsoft 365) i\u00e7eren bir SPF politikas\u0131 tan\u0131mlaman\u0131z gerekir. \u00d6rne\u011fin: <code>v=spf1 ip4:192.0.2.1 include:_spf.google.com ~all<\/code>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Eksik-DKIM-DomainKeys-Identified-Mail-Kaydi\"><\/span>Eksik DKIM (DomainKeys Identified Mail) Kayd\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DKIM, e-postalar\u0131n\u0131za dijital bir imza ekleyerek, e-postan\u0131n g\u00f6nderim s\u0131ras\u0131nda de\u011fi\u015ftirilmedi\u011fini ve ger\u00e7ekten sizin alan ad\u0131n\u0131zdan geldi\u011fini kriptografik olarak do\u011frular.<\/p>\n<h4>Hatan\u0131n Sonu\u00e7lar\u0131: E-postalar\u0131n B\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fcn Do\u011frulanamamas\u0131<\/h4>\n<p>DKIM imzas\u0131 olmadan, al\u0131c\u0131 sunucular e-postan\u0131n i\u00e7eri\u011finin orijinal olup olmad\u0131\u011f\u0131n\u0131 teyit edemez. Bu durum, e-postalar\u0131n\u0131z\u0131n &#8220;man-in-the-middle&#8221; sald\u0131r\u0131lar\u0131na kar\u015f\u0131 savunmas\u0131z kalmas\u0131na ve g\u00fcvenilirlik puan\u0131n\u0131n d\u00fc\u015fmesine neden olur.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: DKIM \u0130mzas\u0131n\u0131n Olu\u015fturulmas\u0131 ve DNS&#8217;e Public Key&#8217;in Eklenmesi<\/h4>\n<p>E-posta servis sa\u011flay\u0131c\u0131n\u0131z, size \u00f6zel bir anahtar \u00e7ifti (private\/public key) sa\u011flar. Private key e-postalar\u0131 imzalamak i\u00e7in sunucunuzda kal\u0131rken, public key&#8217;i DNS&#8217;inize \u00f6zel bir se\u00e7ici (selector) ile birlikte TXT kayd\u0131 olarak eklersiniz. Al\u0131c\u0131 sunucu, bu public key&#8217;i kullanarak e-postadaki imzay\u0131 do\u011frular.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Yapilandirilmamis-DMARC-Domain-based-Message-Authentication-Reporting-Conformance-Kaydi\"><\/span>Yap\u0131land\u0131r\u0131lmam\u0131\u015f DMARC (Domain-based Message Authentication, Reporting &#038; Conformance) Kayd\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DMARC, SPF ve DKIM kontrollerinin \u00fczerine in\u015fa edilen bir politika ve raporlama katman\u0131d\u0131r. Al\u0131c\u0131 sunuculara, SPF veya DKIM kontrol\u00fcnden ge\u00e7emeyen e-postalara ne yapacaklar\u0131n\u0131 (hi\u00e7bir \u015fey yapma, karantinaya al veya reddet) s\u00f6yler.<\/p>\n<h4>Hatan\u0131n Sonu\u00e7lar\u0131: SPF ve DKIM Hatalar\u0131nda Ne Yap\u0131laca\u011f\u0131n\u0131n Belirsiz Olmas\u0131<\/h4>\n<p>DMARC olmadan, SPF ve DKIM kontrolleri yaln\u0131zca birer sinyaldir. Al\u0131c\u0131 sunucunun bu sinyalleri nas\u0131l yorumlayaca\u011f\u0131 kendi politikalar\u0131na kalm\u0131\u015ft\u0131r. Ayr\u0131ca, alan ad\u0131n\u0131z\u0131n kimler taraf\u0131ndan sahtekarl\u0131k amac\u0131yla kullan\u0131lmaya \u00e7al\u0131\u015f\u0131ld\u0131\u011f\u0131na dair de\u011ferli raporlar\u0131 alamazs\u0131n\u0131z.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: DMARC Politikas\u0131 (none, quarantine, reject) Olu\u015fturma ve Raporlama \u0130\u00e7in Yap\u0131land\u0131rma<\/h4>\n<p>DMARC de bir TXT kayd\u0131 olarak eklenir. Ba\u015flang\u0131\u00e7ta, raporlar\u0131 almak i\u00e7in genellikle &#8220;none&#8221; politikas\u0131 ile ba\u015flan\u0131r (<code>p=none<\/code>). Bu raporlar\u0131 analiz ettikten ve me\u015fru e-posta ak\u0131\u015f\u0131n\u0131z\u0131n SPF ve DKIM&#8217;den ge\u00e7ti\u011finden emin olduktan sonra, politikay\u0131 daha s\u0131k\u0131 olan &#8220;quarantine&#8221; (karantinaya al) veya &#8220;reject&#8221; (reddet) seviyelerine y\u00fckseltebilirsiniz.<\/p>\n<div class=\"karsilastirma\">\n<table>\n<thead>\n<tr>\n<th>Kay\u0131t T\u00fcr\u00fc<\/th>\n<th>Amac\u0131<\/th>\n<th>Koruma Y\u00f6ntemi<\/th>\n<th>Hata Sonucu<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>SPF<\/strong><\/td>\n<td>G\u00f6nderici Do\u011frulama<\/td>\n<td>Yetkili IP adreslerini listeler.<\/td>\n<td>Yetkisiz sunuculardan e-posta g\u00f6nderimi (spoofing).<\/td>\n<\/tr>\n<tr>\n<td><strong>DKIM<\/strong><\/td>\n<td>Mesaj B\u00fct\u00fcnl\u00fc\u011f\u00fc<\/td>\n<td>E-postay\u0131 dijital olarak imzalar.<\/td>\n<td>E-postan\u0131n yolda de\u011fi\u015ftirilip de\u011fi\u015ftirilmedi\u011fi anla\u015f\u0131lamaz.<\/td>\n<\/tr>\n<tr>\n<td><strong>DMARC<\/strong><\/td>\n<td>Politika ve Raporlama<\/td>\n<td>SPF\/DKIM ba\u015far\u0131s\u0131z olursa ne yap\u0131laca\u011f\u0131n\u0131 s\u00f6yler ve raporlar.<\/td>\n<td>Sahte e-postalara kar\u015f\u0131 net bir aksiyon al\u0131namaz ve raporlama yap\u0131lamaz.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Genel-ve-Yapisal-DNS-Hatalari\"><\/span>Genel ve Yap\u0131sal DNS Hatalar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Bireysel kay\u0131t hatalar\u0131n\u0131n \u00f6tesinde, DNS&#8217;in genel yap\u0131s\u0131n\u0131 ve i\u015fleyi\u015fini etkileyen daha temel sorunlar da mevcuttur. Bu t\u00fcr hatalar, genellikle t\u00fcm alan ad\u0131n\u0131n ve ilgili servislerin tamamen \u00e7al\u0131\u015fmaz hale gelmesine neden olabilir. Bu b\u00f6l\u00fcmde, NS kay\u0131tlar\u0131ndan TTL de\u011ferlerine kadar uzanan yap\u0131sal DNS hatalar\u0131n\u0131 ve \u00e7\u00f6z\u00fcmlerini ele alaca\u011f\u0131z.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Yanlis-Yapilandirilmis-NS-Name-Server-Kayitlari\"><\/span>Yanl\u0131\u015f Yap\u0131land\u0131r\u0131lm\u0131\u015f NS (Name Server) Kay\u0131tlar\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>NS kay\u0131tlar\u0131, alan ad\u0131n\u0131z\u0131n DNS bilgilerini bar\u0131nd\u0131ran yetkili sunucular\u0131 belirtir. Bu, DNS hiyerar\u015fisindeki en \u00f6nemli y\u00f6nlendirmelerden biridir.<\/p>\n<h4>Hatan\u0131n Sonu\u00e7lar\u0131: Alan Ad\u0131n\u0131n Tamamen Eri\u015filemez Olmas\u0131<\/h4>\n<p>E\u011fer alan ad\u0131 kay\u0131t firman\u0131zdaki (registrar) NS kay\u0131tlar\u0131, <a href=\"https:\/\/www.ihs.com.tr\/web-hosting\/cpanel-hosting.html\" target=\"_blank\">cPanel hosting<\/a> sa\u011flay\u0131c\u0131n\u0131z\u0131n size verdi\u011fi ger\u00e7ek ad sunucusu adresleriyle e\u015fle\u015fmiyorsa, internetteki hi\u00e7bir \u00e7\u00f6z\u00fcmleyici alan ad\u0131n\u0131z\u0131n A, MX gibi di\u011fer kay\u0131tlar\u0131na ula\u015famaz. Bu durum, web sitenizin, e-postalar\u0131n\u0131z\u0131n ve di\u011fer t\u00fcm alt servislerinizin tamamen \u00e7evrimd\u0131\u015f\u0131 kalmas\u0131 anlam\u0131na gelir.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: Alan Ad\u0131 Kay\u0131t Firmas\u0131 (Registrar) ile Hosting Sa\u011flay\u0131c\u0131n\u0131n NS Bilgilerinin E\u015fle\u015ftirilmesi<\/h4>\n<p>\u00c7\u00f6z\u00fcm i\u00e7in hosting sa\u011flay\u0131c\u0131n\u0131zdan ald\u0131\u011f\u0131n\u0131z do\u011fru NS adreslerini (\u00f6rne\u011fin, ns1.ornekhost.com ve ns2.ornekhost.com) alan ad\u0131n\u0131 tescil etti\u011finiz firman\u0131n y\u00f6netim paneline girmeniz gerekmektedir. Bu iki bilginin her zaman senkronize olmas\u0131 kritik \u00f6neme sahiptir. Alan ad\u0131 transferi gibi i\u015flemlerde bu kontrol \u00f6zellikle \u00f6nemlidir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cok-Dusuk-veya-Cok-Yuksek-TTL-Time-To-Live-Degerleri\"><\/span>\u00c7ok D\u00fc\u015f\u00fck veya \u00c7ok Y\u00fcksek TTL (Time To Live) De\u011ferleri<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>TTL, bir DNS kayd\u0131n\u0131n \u00e7\u00f6z\u00fcmleyici sunucular\u0131n \u00f6nbelle\u011finde ne kadar s\u00fcreyle saklanaca\u011f\u0131n\u0131 belirten saniye cinsinden bir de\u011ferdir.<\/p>\n<h4>Hatan\u0131n Sonu\u00e7lar\u0131: Yava\u015f G\u00fcncellemeler veya DNS Sunucular\u0131nda A\u015f\u0131r\u0131 Y\u00fck<\/h4>\n<p><b>\u00c7ok Y\u00fcksek TTL:<\/b> E\u011fer TTL de\u011feri \u00e7ok y\u00fcksekse (\u00f6rne\u011fin, 24 saat), yapt\u0131\u011f\u0131n\u0131z bir DNS de\u011fi\u015fikli\u011finin (\u00f6rne\u011fin IP adresi g\u00fcncellemesi) d\u00fcnya geneline yay\u0131lmas\u0131 \u00e7ok uzun s\u00fcrer. Bu s\u00fcre zarf\u0131nda kullan\u0131c\u0131lar eski, ge\u00e7ersiz bilgiye y\u00f6nlenmeye devam eder.<br \/>\n<b>\u00c7ok D\u00fc\u015f\u00fck TTL:<\/b> TTL de\u011feri \u00e7ok d\u00fc\u015f\u00fckse (\u00f6rne\u011fin, 60 saniye), \u00e7\u00f6z\u00fcmleyiciler s\u00fcrekli olarak yetkili sunucunuza sorgu g\u00f6ndermek zorunda kal\u0131r. Bu durum, yetkili DNS sunucunuzda gereksiz bir y\u00fck olu\u015fturarak performans\u0131 d\u00fc\u015f\u00fcrebilir.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: Kay\u0131t T\u00fcr\u00fcne ve De\u011fi\u015fiklik S\u0131kl\u0131\u011f\u0131na G\u00f6re Optimal TTL De\u011ferlerinin Belirlenmesi<\/h4>\n<p>S\u0131k de\u011fi\u015fmeyen A veya MX gibi kay\u0131tlar i\u00e7in 3600 (1 saat) ile 86400 (24 saat) aras\u0131 bir TTL de\u011feri genellikle uygundur. Ancak bir sunucu ta\u015f\u0131ma veya IP de\u011fi\u015fikli\u011fi planl\u0131yorsan\u0131z, bu i\u015flemden 24-48 saat \u00f6nce ilgili kay\u0131tlar\u0131n TTL de\u011ferini 300 (5 dakika) gibi d\u00fc\u015f\u00fck bir seviyeye \u00e7ekmek, ge\u00e7i\u015fin sorunsuz ve h\u0131zl\u0131 olmas\u0131n\u0131 sa\u011flar. \u0130\u015flem bittikten sonra TTL de\u011feri tekrar eski seviyesine y\u00fckseltilmelidir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Eksik-%E2%80%9CGlue%E2%80%9D-Kayitlari-ve-Cozumleneme-Donguleri\"><\/span>Eksik &#8220;Glue&#8221; Kay\u0131tlar\u0131 ve \u00c7\u00f6z\u00fcmleneme D\u00f6ng\u00fcleri<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>E\u011fer ad sunucular\u0131n\u0131z (NS), y\u00f6netti\u011fi alan ad\u0131n\u0131n kendisi alt\u0131ndaysa (\u00f6rne\u011fin, alan ad\u0131n\u0131z &#8220;example.com&#8221; ve NS&#8217;leriniz &#8220;ns1.example.com&#8221; ise), bu bir &#8220;tavuk-yumurta&#8221; problemi yarat\u0131r.<\/p>\n<h4>Hatan\u0131n Sonu\u00e7lar\u0131: Alan Ad\u0131na Ait Name Server&#8217;lara Eri\u015filememesi<\/h4>\n<p>Bir \u00e7\u00f6z\u00fcmleyici, &#8220;example.com&#8221; i\u00e7in NS&#8217;leri bulmaya \u00e7al\u0131\u015ft\u0131\u011f\u0131nda, &#8220;ns1.example.com&#8221; adresine y\u00f6nlendirilir. Ancak &#8220;ns1.example.com&#8221; adresinin IP&#8217;sini bulmak i\u00e7in yine &#8220;example.com&#8221;un NS&#8217;lerine sormas\u0131 gerekir. Bu sonsuz d\u00f6ng\u00fc, alan ad\u0131n\u0131n \u00e7\u00f6z\u00fcmlenmesini imkans\u0131z k\u0131lar.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: Name Server Alan Ad\u0131 ile Ayn\u0131 Domain Alt\u0131ndaysa Glue Kay\u0131tlar\u0131n\u0131n Olu\u015fturulmas\u0131<\/h4>\n<p>Bu d\u00f6ng\u00fcy\u00fc k\u0131rmak i\u00e7in &#8220;glue record&#8221; (yap\u0131\u015ft\u0131r\u0131c\u0131 kay\u0131t) olu\u015fturulur. Bu kay\u0131t, alan ad\u0131 kay\u0131t firman\u0131z\u0131n (registrar) seviyesinde, &#8220;ns1.example.com&#8221; gibi bir ad sunucusunun ad\u0131n\u0131 do\u011frudan IP adresiyle e\u015fle\u015ftirir. B\u00f6ylece \u00e7\u00f6z\u00fcmleyici, d\u00f6ng\u00fcye girmeden ad sunucusunun nerede oldu\u011funu \u00f6\u011frenebilir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Wildcard-DNS-Kayitlarinin-Kontrolsuz-Kullanimi\"><\/span>Wildcard (*) DNS Kay\u0131tlar\u0131n\u0131n Kontrols\u00fcz Kullan\u0131m\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Wildcard kayd\u0131 (*), mevcut olmayan herhangi bir alt alan ad\u0131na yap\u0131lan istekleri belirli bir hedefe (genellikle bir IP adresi) y\u00f6nlendirir.<\/p>\n<h4>Hatan\u0131n Sonu\u00e7lar\u0131: Beklenmeyen Alt Alan Adlar\u0131n\u0131n \u00c7\u00f6z\u00fcmlenmesi ve G\u00fcvenlik A\u00e7\u0131klar\u0131<\/h4>\n<p>Kullan\u0131\u015fl\u0131 olabilse de, kontrols\u00fcz bir wildcard kayd\u0131, yaz\u0131m hatas\u0131 yap\u0131lm\u0131\u015f alt alan adlar\u0131n\u0131n bile (\u00f6rne\u011fin, &#8220;ww.example.com&#8221;) ana sitenize y\u00f6nlenmesine neden olabilir. Bu durum, sahte alt alan adlar\u0131 olu\u015fturularak yap\u0131lan oltalama (phishing) sald\u0131r\u0131lar\u0131 i\u00e7in bir zemin haz\u0131rlayabilir ve \u00e7erezlerin (cookies) yanl\u0131\u015fl\u0131kla bu sahte alan adlar\u0131na g\u00f6nderilmesine yol a\u00e7arak g\u00fcvenlik riskleri olu\u015fturabilir.<\/p>\n<h4>\u00c7\u00f6z\u00fcm: Wildcard Kay\u0131tlar\u0131n\u0131n Yaln\u0131zca Gerekli Durumlarda ve Dikkatli Kullan\u0131m\u0131<\/h4>\n<p>Wildcard kay\u0131tlar\u0131n\u0131 kullanmaktan m\u00fcmk\u00fcn oldu\u011funca ka\u00e7\u0131n\u0131n. E\u011fer kullanmak zorundaysan\u0131z, yaln\u0131zca belirli bir amaca hizmet etti\u011finden ve potansiyel g\u00fcvenlik risklerini anlad\u0131\u011f\u0131n\u0131zdan emin olun. Genellikle, ihtiya\u00e7 duyulan her alt alan ad\u0131 i\u00e7in ayr\u0131 ayr\u0131 (A veya CNAME) kay\u0131tlar olu\u015fturmak daha g\u00fcvenli ve y\u00f6netilebilir bir yakla\u015f\u0131md\u0131r.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"DNS-Hatalarini-Teshis-Etme-ve-Onleme-Yontemleri\"><\/span>DNS Hatalar\u0131n\u0131 Te\u015fhis Etme ve \u00d6nleme Y\u00f6ntemleri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>DNS hatalar\u0131n\u0131 \u00e7\u00f6zmek kadar, onlar\u0131 proaktif olarak tespit etmek ve en ba\u015ftan olu\u015fmalar\u0131n\u0131 \u00f6nlemek de \u00f6nemlidir. Do\u011fru ara\u00e7lar\u0131 kullanarak ve en iyi uygulamalar\u0131 takip ederek DNS altyap\u0131n\u0131z\u0131n sa\u011fl\u0131\u011f\u0131n\u0131 ve stabilitesini koruyabilirsiniz. Bu b\u00f6l\u00fcmde, DNS sorunlar\u0131n\u0131 te\u015fhis etmenizi sa\u011flayacak ara\u00e7lar\u0131 ve gelecekteki hatalar\u0131 \u00f6nlemenize yard\u0131mc\u0131 olacak stratejileri inceleyece\u011fiz.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Online-DNS-Kontrol-Araclari-DNS-Checker-MXToolBox-vb\"><\/span>Online DNS Kontrol Ara\u00e7lar\u0131 (DNS Checker, MXToolBox vb.)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DNS yap\u0131land\u0131rman\u0131z\u0131 kontrol etmenin en kolay yollar\u0131ndan biri, web tabanl\u0131 ara\u00e7lar\u0131 kullanmakt\u0131r. DNS Checker gibi siteler, bir DNS kayd\u0131n\u0131n d\u00fcnyan\u0131n farkl\u0131 noktalar\u0131ndan nas\u0131l \u00e7\u00f6z\u00fcmlendi\u011fini g\u00f6stererek yapt\u0131\u011f\u0131n\u0131z de\u011fi\u015fikliklerin yay\u0131l\u0131m\u0131n\u0131 (propagation) izlemenize olanak tan\u0131r. MXToolBox ise \u00f6zellikle MX kay\u0131tlar\u0131, SPF, DKIM, DMARC ve kara liste (blacklist) kontrolleri gibi e-posta ile ilgili DNS ayarlar\u0131n\u0131 derinlemesine analiz etmek i\u00e7in m\u00fckemmel bir kaynakt\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Komut-Satiri-Araclari-ile-Manuel-Kontrol\"><\/span>Komut Sat\u0131r\u0131 Ara\u00e7lar\u0131 ile Manuel Kontrol<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Daha teknik bir analiz ve anl\u0131k sorgulama i\u00e7in, i\u015fletim sisteminizle birlikte gelen komut sat\u0131r\u0131 ara\u00e7lar\u0131 paha bi\u00e7ilmezdir. Bu ara\u00e7lar, online denetleyicilerin \u00f6nbelle\u011fe al\u0131nm\u0131\u015f sonu\u00e7lar\u0131 yerine do\u011frudan DNS sunucular\u0131ndan canl\u0131 veriler sa\u011flar.<\/p>\n<h4><code>dig<\/code> Komutu ile Detayl\u0131 Sorgulama<\/h4>\n<p>Linux ve macOS sistemlerinde yayg\u0131n olarak bulunan `dig` (Domain Information Groper) komutu, DNS sorgular\u0131 hakk\u0131nda son derece ayr\u0131nt\u0131l\u0131 bilgi sunar. Belirli bir kay\u0131t t\u00fcr\u00fcn\u00fc sorgulamak (<code>dig example.com MX<\/code>), belirli bir DNS sunucusuna sormak (<code>dig @8.8.8.8 example.com<\/code>) ve TTL de\u011ferleri, sunucu yan\u0131t s\u00fcreleri gibi teknik detaylar\u0131 g\u00f6rmek i\u00e7in kullan\u0131l\u0131r.<\/p>\n<h4><code>nslookup<\/code> Komutu ile Temel Sorgulama<\/h4>\n<p>Hem Windows hem de Linux\/macOS sistemlerinde bulunan `nslookup` komutu, daha basit bir aray\u00fcze sahiptir ve h\u0131zl\u0131 kontroller i\u00e7in idealdir. Bir alan ad\u0131n\u0131n A kayd\u0131n\u0131 (IP adresini) veya MX kay\u0131tlar\u0131n\u0131 h\u0131zl\u0131ca sorgulamak i\u00e7in kullan\u0131labilir. \u0130nteraktif modda \u00e7al\u0131\u015farak farkl\u0131 sunuculara ve kay\u0131t t\u00fcrlerine y\u00f6nelik ard\u0131\u015f\u0131k sorgular yapma imkan\u0131 da sunar.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hatalari-Onlemek-Icin-En-Iyi-Uygulamalar\"><\/span>Hatalar\u0131 \u00d6nlemek \u0130\u00e7in En \u0130yi Uygulamalar<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Reaktif olarak sorun \u00e7\u00f6zmek yerine proaktif bir yakla\u015f\u0131mla DNS hatalar\u0131n\u0131 en aza indirmek m\u00fcmk\u00fcnd\u00fcr. \u0130\u015fte bu konuda izlenmesi gereken baz\u0131 temel prensipler:<\/p>\n<ul>\n<li><strong>De\u011fi\u015fiklikleri Kay\u0131t Alt\u0131na Alma:<\/strong> DNS&#8217;te yap\u0131lan her de\u011fi\u015fikli\u011fin ne zaman, kim taraf\u0131ndan ve neden yap\u0131ld\u0131\u011f\u0131n\u0131 belgeleyin. Bu, bir sorun ortaya \u00e7\u0131kt\u0131\u011f\u0131nda kayna\u011f\u0131n\u0131 h\u0131zl\u0131ca bulman\u0131za ve geri alman\u0131za yard\u0131mc\u0131 olur.<\/li>\n<li><strong>TTL De\u011ferlerini D\u00fc\u015f\u00fcrerek De\u011fi\u015fiklik Yapma:<\/strong> Kritik bir DNS kayd\u0131n\u0131 de\u011fi\u015ftirmeden en az 24 saat \u00f6nce TTL de\u011ferini 5 dakika gibi k\u0131sa bir s\u00fcreye indirin. Bu sayede, yeni kay\u0131tlar internete \u00e7ok daha h\u0131zl\u0131 yay\u0131l\u0131r ve olas\u0131 bir hatay\u0131 d\u00fczeltmeniz gerekti\u011finde, bu d\u00fczeltme de ayn\u0131 h\u0131zda etkili olur. De\u011fi\u015fiklik ba\u015far\u0131yla tamamland\u0131ktan sonra TTL&#8217;i tekrar eski, daha y\u00fcksek de\u011ferine getirmeyi unutmay\u0131n.<\/li>\n<li><strong>Periyodik DNS Sa\u011fl\u0131k Taramalar\u0131:<\/strong> Belirli aral\u0131klarla (\u00f6rne\u011fin, ayda bir) online ara\u00e7lar kullanarak t\u00fcm DNS kay\u0131tlar\u0131n\u0131z\u0131n (A, MX, SPF, DKIM vb.) sa\u011fl\u0131\u011f\u0131n\u0131 kontrol edin. Bu taramalar, fark\u0131nda olmad\u0131\u011f\u0131n\u0131z sorunlar\u0131 veya eksiklikleri y\u00fczeye \u00e7\u0131karabilir.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Guvenilir-DNS-Yonetimi-Icin-Neden-IHS-Telekomu-Tercih-Etmelisiniz\"><\/span>G\u00fcvenilir DNS Y\u00f6netimi \u0130\u00e7in Neden \u0130HS Telekom&#8217;u Tercih Etmelisiniz?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>DNS y\u00f6netimi, teknik bilgi ve s\u00fcrekli dikkat gerektiren kritik bir s\u00fcre\u00e7tir. Yap\u0131lacak en k\u00fc\u00e7\u00fck bir hata, i\u015f ak\u0131\u015f\u0131n\u0131z\u0131 tamamen durdurabilir. Bu nedenle, g\u00fcvenilir, kullan\u0131c\u0131 dostu ve uzman deste\u011fi sunan bir altyap\u0131 ile \u00e7al\u0131\u015fmak, dijital varl\u0131klar\u0131n\u0131z\u0131n s\u00fcreklili\u011fi i\u00e7in hayati \u00f6nem ta\u015f\u0131r. \u0130HS Telekom, DNS y\u00f6netimi konusunda i\u015fletmenizin ihtiya\u00e7 duydu\u011fu t\u00fcm profesyonel \u00e7\u00f6z\u00fcmleri bir araya getirir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"724-Uzman-Teknik-Destek-ve-Sorun-Cozumu\"><\/span>7\/24 Uzman Teknik Destek ve Sorun \u00c7\u00f6z\u00fcm\u00fc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DNS sorunlar\u0131 zaman tan\u0131maz ve an\u0131nda m\u00fcdahale gerektirir. \u0130HS Telekom&#8217;un 7\/24 hizmet veren uzman teknik destek ekibi, DNS ile ilgili kar\u015f\u0131la\u015fabilece\u011finiz her t\u00fcrl\u00fc sorunda size h\u0131zl\u0131 ve etkili \u00e7\u00f6z\u00fcmler sunar. Teknik jargona bo\u011fulmadan, sorununuzu anlayan ve \u00e7\u00f6z\u00fcme kavu\u015fturan profesyonellerle \u00e7al\u0131\u015fman\u0131n rahatl\u0131\u011f\u0131n\u0131 ya\u015fars\u0131n\u0131z.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Gelismis-ve-Kullanici-Dostu-DNS-Yonetim-Paneli\"><\/span>Geli\u015fmi\u015f ve Kullan\u0131c\u0131 Dostu DNS Y\u00f6netim Paneli<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Karma\u015f\u0131k DNS kay\u0131tlar\u0131n\u0131 y\u00f6netmek zor olmak zorunda de\u011fil. \u0130HS Telekom&#8217;un sundu\u011fu geli\u015fmi\u015f ve kullan\u0131c\u0131 dostu DNS y\u00f6netim paneli sayesinde, t\u00fcm kay\u0131tlar\u0131n\u0131z\u0131 (A, CNAME, MX, TXT vb.) kolayca ekleyebilir, d\u00fczenleyebilir ve silebilirsiniz. Sezgisel aray\u00fcz, teknik bilgisi az olan kullan\u0131c\u0131lar\u0131n bile i\u015flemlerini g\u00fcvenle yapabilmesini sa\u011flar.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Yedekli-ve-Yuksek-Performansli-DNS-Altyapisi\"><\/span>Yedekli ve Y\u00fcksek Performansl\u0131 DNS Altyap\u0131s\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Web sitenizin h\u0131z\u0131 ve eri\u015filebilirli\u011fi, DNS sunucular\u0131n\u0131z\u0131n performans\u0131na do\u011frudan ba\u011fl\u0131d\u0131r. \u0130HS Telekom, co\u011frafi olarak farkl\u0131 lokasyonlarda konumland\u0131r\u0131lm\u0131\u015f, yedekli ve y\u00fcksek performansl\u0131 bir DNS altyap\u0131s\u0131 sunar. Bu sayede, tek bir sunucuda ya\u015fanabilecek bir ar\u0131za sitenizi etkilemez ve Anycast teknolojisi ile DNS sorgular\u0131 kullan\u0131c\u0131lara en yak\u0131n sunucudan yan\u0131tlanarak sitenizin a\u00e7\u0131l\u0131\u015f h\u0131z\u0131 art\u0131r\u0131l\u0131r.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tek-Tikla-SPF-DKIM-ve-DMARC-Kayit-Yonetimi\"><\/span>Tek T\u0131kla SPF, DKIM ve DMARC Kay\u0131t Y\u00f6netimi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>E-posta g\u00fcvenli\u011fi i\u00e7in kritik olan SPF, DKIM ve DMARC kay\u0131tlar\u0131n\u0131 olu\u015fturmak genellikle karma\u015f\u0131k bir s\u00fcre\u00e7tir. \u0130HS Telekom, y\u00f6netim panelinde sundu\u011fu sihirbazlar ve basitle\u015ftirilmi\u015f ara\u00e7lar sayesinde bu \u00f6nemli g\u00fcvenlik kay\u0131tlar\u0131n\u0131 tek t\u0131kla veya birka\u00e7 basit ad\u0131mla, hatas\u0131z bir \u015fekilde olu\u015fturman\u0131za olanak tan\u0131r. \u00d6zellikle <a href=\"https:\/\/www.ihs.com.tr\/web-hosting\/wordpress-hosting.html\" target=\"_blank\">wordpress hosting<\/a> gibi platformlarda e-posta teslimat\u0131n\u0131 g\u00fcvence alt\u0131na almak i\u00e7in bu \u00f6zellik kritik \u00f6neme sahiptir.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"DNSSEC-Destegi-ile-Ekstra-Guvenlik-Katmani\"><\/span>DNSSEC Deste\u011fi ile Ekstra G\u00fcvenlik Katman\u0131<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>DNSSEC (DNS Security Extensions), DNS sorgular\u0131na dijital imza ekleyerek sahtekarl\u0131\u011fa ve &#8220;man-in-the-middle&#8221; sald\u0131r\u0131lar\u0131na kar\u015f\u0131 koruma sa\u011flar. Bu, kullan\u0131c\u0131lar\u0131n\u0131z\u0131n her zaman do\u011fru web sitesine y\u00f6nlendirildi\u011finden emin olman\u0131z\u0131 sa\u011flayan \u00f6nemli bir g\u00fcvenlik katman\u0131d\u0131r. \u0130HS Telekom, DNSSEC deste\u011fi sunarak alan adlar\u0131n\u0131z i\u00e7in en \u00fcst d\u00fczeyde g\u00fcvenlik yap\u0131land\u0131rmas\u0131 yapman\u0131za imkan tan\u0131r ve bu sayede sitenize bir <a href=\"https:\/\/www.ihs.com.tr\/ssl\/\" target=\"_blank\">SSL sertifikas\u0131<\/a> eklemek kadar \u00f6nemli olan DNS g\u00fcvenli\u011fini de sa\u011flam\u0131\u015f olursunuz.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0130nternet d\u00fcnyas\u0131n\u0131n temel ta\u015flar\u0131ndan biri olan DNS (Domain Name System), kullan\u0131c\u0131lar\u0131n karma\u015f\u0131k IP adresleri yerine ak\u0131lda kal\u0131c\u0131 alan adlar\u0131 kullanarak web sitelerine&hellip;<\/p>\n","protected":false},"author":3,"featured_media":16503,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[398],"tags":[],"class_list":["post-16502","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alan-adi"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/16502","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=16502"}],"version-history":[{"count":1,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/16502\/revisions"}],"predecessor-version":[{"id":16504,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/16502\/revisions\/16504"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/media\/16503"}],"wp:attachment":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=16502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=16502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=16502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}