{"id":14838,"date":"2024-01-15T15:00:11","date_gmt":"2024-01-15T13:00:11","guid":{"rendered":"https:\/\/www.ihs.com.tr\/blog\/?p=14838"},"modified":"2024-01-15T15:00:37","modified_gmt":"2024-01-15T13:00:37","slug":"dmarc-nedir","status":"publish","type":"post","link":"https:\/\/www.ihs.com.tr\/blog\/dmarc-nedir\/","title":{"rendered":"DMARC Nedir ve E-posta G\u00fcvenli\u011fi \u0130\u00e7in Neden \u00d6nemlidir?"},"content":{"rendered":"<p>E-posta g\u00fcvenli\u011finin \u00f6ncelikli konular\u0131ndan biri olan <strong>DMARC (Domain-based Message Authentication, Reporting &amp; Conformance)<\/strong>, domainler \u00fczerinden yap\u0131lan doland\u0131r\u0131c\u0131l\u0131k ve kimlik taklitlerine kar\u015f\u0131 \u00f6nemli bir savunma mekanizmas\u0131d\u0131r. Bu makalede, DMARC&#8217;\u0131n temel prensiplerine, nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131na ve bir DMARC kayd\u0131n\u0131n nas\u0131l olu\u015fturulup uygulanaca\u011f\u0131na dair bilgiler sunaca\u011f\u0131z.<\/p>\n<p>&nbsp;<\/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-69fb25be01b0f\" 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-69fb25be01b0f\" 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\/dmarc-nedir\/#DMARC-Nedir\" >DMARC Nedir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ihs.com.tr\/blog\/dmarc-nedir\/#DMARC-Nasil-Calisir\" >DMARC Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ihs.com.tr\/blog\/dmarc-nedir\/#DMARCin-Faydalari-Nelerdir\" >DMARC&#8217;\u0131n Faydalar\u0131 Nelerdir?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ihs.com.tr\/blog\/dmarc-nedir\/#DMARC-Kaydi-Nasil-Yazilir\" >DMARC Kayd\u0131 Nas\u0131l Yaz\u0131l\u0131r?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ihs.com.tr\/blog\/dmarc-nedir\/#vDMARC1\" >v=DMARC1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ihs.com.tr\/blog\/dmarc-nedir\/#p-Policy\" >p (Policy)<\/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\/dmarc-nedir\/#rua-Reporting-URI-of-Aggregate-reports\" >rua (Reporting URI of Aggregate reports)<\/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\/dmarc-nedir\/#ruf-Reporting-URI-for-Forensic-reports\" >ruf (Reporting URI for Forensic reports)<\/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\/dmarc-nedir\/#pct-Percentage\" >pct (Percentage)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ihs.com.tr\/blog\/dmarc-nedir\/#sp-Subdomain-Policy\" >sp (Subdomain Policy)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ihs.com.tr\/blog\/dmarc-nedir\/#adkim-Alignment-mode-for-DKIM\" >adkim (Alignment mode for DKIM)<\/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\/dmarc-nedir\/#aspf-Alignment-mode-for-SPF\" >aspf (Alignment mode for SPF)<\/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\/dmarc-nedir\/#ri-Reporting-Interval\" >ri (Reporting Interval)<\/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\/dmarc-nedir\/#DMARC-Kaydinizi-Nasil-Uygularsiniz\" >DMARC Kayd\u0131n\u0131z\u0131 Nas\u0131l Uygulars\u0131n\u0131z?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"DMARC-Nedir\"><\/span>DMARC Nedir?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>DMARC<\/strong>, ba\u015fka bir deyi\u015fle Alan Tabanl\u0131 Mesaj Do\u011frulama, Raporlama ve Uygunluk, sahte e-posta g\u00f6nderimlerine kar\u015f\u0131 koruma sa\u011flamay\u0131 ama\u00e7layan bir e-posta kimlik do\u011frulama protokol\u00fcd\u00fcr. \u0130ki temel protokol olan <a href=\"https:\/\/www.ihs.com.tr\/blog\/spf-kaydi-nedir-ne-ise-yarar\/\" target=\"_blank\" rel=\"noopener\">SPF (Sender Policy Framework)<\/a> ve <a href=\"https:\/\/www.ihs.com.tr\/blog\/dkim-kaydi-nedir-nasil-yapilir\/\" target=\"_blank\" rel=\"noopener\">DKIM (DomainKeys Identified Mail)<\/a> kullanarak, yetkisiz ki\u015filer taraf\u0131ndan yap\u0131lan ve me\u015fru kurulu\u015flar\u0131 taklit eden e-postalar\u0131n tespit edilmesine yard\u0131mc\u0131 olur.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"DMARC-Nasil-Calisir\"><\/span>DMARC Nas\u0131l \u00c7al\u0131\u015f\u0131r?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>DMARC, e-posta g\u00f6ndericilerin, SPF ve DKIM kullanarak do\u011frulanm\u0131\u015f e-postalar\u0131n nas\u0131l ele al\u0131nmas\u0131 gerekti\u011fini belirlemesine olanak tan\u0131r. G\u00f6ndericiler, bu e-postalar\u0131 istenmeyen veya engellenmi\u015f olarak i\u015faretlemeyi tercih edebilirler.<\/p>\n<p>B\u00f6ylece \u0130nternet Servis Sa\u011flay\u0131c\u0131lar\u0131 (ISP), spam ve zararl\u0131 e-postalar\u0131 daha etkin bir \u015fekilde tespit edebilir ve kullan\u0131c\u0131lar\u0131n gelen kutular\u0131na ula\u015fmalar\u0131n\u0131 engelleyebilir. DMARC ayr\u0131ca yanl\u0131\u015f pozitiflerin azalt\u0131lmas\u0131na ve daha iyi kimlik do\u011frulama raporlamas\u0131na olanak tan\u0131yarak piyasadaki \u015feffafl\u0131\u011f\u0131 art\u0131r\u0131r.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"DMARCin-Faydalari-Nelerdir\"><\/span>DMARC&#8217;\u0131n Faydalar\u0131 Nelerdir?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>G\u00f6nderim itibar\u0131n\u0131z\u0131 korur: DMARC, yetkisiz ki\u015filerin sizin domaininizden <a href=\"https:\/\/www.ihs.com.tr\/blog\/posta-sunucusu-mail-server-nedir-nasil-calisir\/\" target=\"_blank\" rel=\"noopener\">mail g\u00f6ndermesini<\/a> \u00f6nleyerek markan\u0131z\u0131 korur.<\/li>\n<li>E-posta program\u0131n\u0131z\u0131n g\u00f6r\u00fcn\u00fcrl\u00fc\u011f\u00fcn\u00fc art\u0131r\u0131r: DMARC raporlar\u0131, domaininizden kimlerin e-posta g\u00f6nderdi\u011fi hakk\u0131nda bilgi sunar.<\/li>\n<li>Gelecekteki e-posta teslim edilebilirli\u011fini g\u00fcvence alt\u0131na al\u0131r: DMARC, kimlik do\u011frulama yapamayan mesajlarla ilgili olarak tutarl\u0131 bir politika belirleme konusunda e-posta toplulu\u011funa yard\u0131mc\u0131 olur.<\/li>\n<li>BIMI ile logonuzu g\u00f6sterebilir: DMARC, desteklenen e-posta istemcileri ile markan\u0131z\u0131n logolu e-posta mesajlar\u0131 g\u00f6ndermenize olanak verir.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"DMARC-Kaydi-Nasil-Yazilir\"><\/span>DMARC Kayd\u0131 Nas\u0131l Yaz\u0131l\u0131r?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Bir DMARC kayd\u0131 <a href=\"https:\/\/www.ihs.com.tr\/blog\/dns-sunucusu-nedir\/\" target=\"_blank\" rel=\"noopener\">DNS (Domain Name System)<\/a> kay\u0131tlar\u0131 aras\u0131nda yer al\u0131r ve a\u015fa\u011f\u0131daki \u00f6rnekte g\u00f6sterildi\u011fi gibi bir yap\u0131ya sahiptir:<\/p>\n<pre>v=DMARC1; p=none; rua=mailto:rapor@ornek.com; ruf=mailto:yonetici@ornek.com; pct=100<\/pre>\n<p>Her alan\u0131n k\u0131sa a\u00e7\u0131klamas\u0131 \u015fu \u015fekildedir:<\/p>\n<p>&#8211; `v=DMARC1`: DMARC s\u00fcr\u00fcm\u00fcn\u00fc belirtir.<\/p>\n<p>&#8211; `p=none`: Politikad\u0131r ve bu durumda hi\u00e7bir eylem al\u0131nmad\u0131\u011f\u0131n\u0131 belirtir. `none` yerine `quarantine` ya da `reject` de kullan\u0131labilir.<\/p>\n<p>&#8211; `rua=mailto:rapor@ornek.com`: Toplu raporlar\u0131n g\u00f6nderilece\u011fi adresi belirtir.<\/p>\n<p>&#8211; `ruf=mailto:yonetici@ornek.com`: Bireysel ayr\u0131nt\u0131l\u0131 raporlar\u0131n g\u00f6nderilece\u011fi adresi belirtir.<\/p>\n<p>&#8211; `pct=100`: Politikan\u0131n uygulanaca\u011f\u0131 e-posta trafi\u011finin y\u00fczdesini belirtir.<\/p>\n<p>&nbsp;<\/p>\n<p>DMARC kayd\u0131, birka\u00e7 farkl\u0131 parametre i\u00e7erir ve bu parametrelerin her biri e-posta g\u00f6nderildi\u011finde uygulanacak kurallar\u0131 tan\u0131mlar. \u0130\u015fte DMARC kayd\u0131 olu\u015ftururken kullan\u0131lan temel parametreler ve bu parametrelerin detaylar\u0131:<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"vDMARC1\"><\/span>v=DMARC1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Kayd\u0131n DMARC versiyonunu belirtir. T\u00fcm DMARC kay\u0131tlar\u0131, `v=DMARC1` ile ba\u015flamal\u0131d\u0131r.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"p-Policy\"><\/span>p (Policy)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; `p` parametresi, DMARC politikan\u0131n hangi aksiyonun al\u0131nmas\u0131 gerekti\u011fini tan\u0131mlar. Kullan\u0131lacak olan \u00fc\u00e7 de\u011ferden birisidir:<\/p>\n<p>&#8211; `none`: DMARC kontrollerinden ge\u00e7emeyen e-postalar i\u00e7in herhangi bir i\u015flem yap\u0131lmamas\u0131n\u0131 belirtir. Bu genelde izleme ve raporlama ama\u00e7l\u0131 kullan\u0131l\u0131r.<\/p>\n<p>&#8211; `quarantine`: DMARC kontrollerini ge\u00e7emeyen e-postalar\u0131n al\u0131c\u0131n\u0131n spam ya da karantina klas\u00f6r\u00fcne ta\u015f\u0131nmas\u0131n\u0131 istedi\u011finizi ifade eder.<\/p>\n<p>&#8211; `reject`: DMARC kontrollerinden ge\u00e7emeyen e-postalar\u0131n tamamen reddedilmesini ve al\u0131c\u0131n\u0131n gelen kutusuna hi\u00e7 ula\u015fmamas\u0131n\u0131 sa\u011flar.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"rua-Reporting-URI-of-Aggregate-reports\"><\/span>rua (Reporting URI of Aggregate reports)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; `rua` parametresi, toplu raporlar\u0131n g\u00f6nderilmesi gereken e-posta adresini belirtir. Bu raporlar genellikle g\u00fcnl\u00fck olarak g\u00f6nderilir ve domaininizden g\u00f6nderilen e-postalar\u0131n genel bir \u00f6zetini sunar.<\/p>\n<p>&#8211; \u00d6rnek: `rua=mailto:rapor@ornek.com`<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"ruf-Reporting-URI-for-Forensic-reports\"><\/span>ruf (Reporting URI for Forensic reports)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; `ruf` parametresi, bireysel olay raporlar\u0131n\u0131n g\u00f6nderilmesi gereken e-posta adresini tan\u0131mlar. Bu raporlar, belirli DMARC ba\u015far\u0131s\u0131zl\u0131klar\u0131 hakk\u0131nda detayl\u0131 bilgiler i\u00e7erir.<\/p>\n<p>&#8211; \u00d6rnek: `ruf=mailto:forensic@ornek.com`<\/p>\n<p>Forensic rapor (forensic report), DMARC protokol\u00fc kapsam\u0131nda, e-posta kimlik do\u011frulama kontrollerinden (SPF ve\/veya DKIM) ba\u015far\u0131s\u0131z ge\u00e7en her bir e-posta olay\u0131 i\u00e7in detayl\u0131 teknik bilgi i\u00e7eren rapor t\u00fcr\u00fcd\u00fcr. Forensic raporlar, belirli bir e-postan\u0131n neden do\u011frulama ba\u015far\u0131s\u0131zl\u0131\u011f\u0131 ya\u015fad\u0131\u011f\u0131n\u0131 anlamak i\u00e7in kullan\u0131l\u0131r ve genellikle olay\u0131n zaman damgas\u0131, hedef e-posta adresi, sorunlu e-postan\u0131n kayna\u011f\u0131 ve ba\u015far\u0131s\u0131zl\u0131\u011fa yol a\u00e7an teknik sebepler gibi kritik verileri bar\u0131nd\u0131r\u0131r.<\/p>\n<blockquote><p>&#8220;Forensic&#8221; terimi, su\u00e7lar\u0131n \u00e7\u00f6z\u00fclmesine ve kan\u0131tlar\u0131n incelenmesine yard\u0131mc\u0131 olan bilimsel teknikler ve y\u00f6ntemlerle ili\u015fkilendirilen bir aland\u0131r. Genel anlamda, adli veya forensic ifadesi, yasal s\u00fcre\u00e7ler i\u00e7in ge\u00e7erli, mahkemede delil olarak kullan\u0131labilir bilgileri ifade eder.<\/p><\/blockquote>\n<p>DMARC&#8217;\u0131n `ruf` parametresi arac\u0131l\u0131\u011f\u0131yla belirlenen bir e-posta adresine ger\u00e7ek zamanl\u0131 olarak g\u00f6nderilen bu raporlar, \u015fu bilgileri i\u00e7erebilir:<\/p>\n<p>&#8211; E-postan\u0131n ba\u015fl\u0131klar\u0131 (Header),<br \/>\n&#8211; Al\u0131c\u0131 adresi,<br \/>\n&#8211; G\u00f6nderici adresi,<br \/>\n&#8211; Mesaj\u0131n orijinal kayna\u011f\u0131 (IP adresi),<br \/>\n&#8211; E-postan\u0131n hangi kontrol noktalar\u0131ndan ge\u00e7emedi\u011fi (SPF veya DKIM),<br \/>\n&#8211; DMARC politikan\u0131za g\u00f6re neden ba\u015far\u0131s\u0131zl\u0131kla sonu\u00e7land\u0131\u011f\u0131na dair ayr\u0131nt\u0131lar,<br \/>\n&#8211; E-postan\u0131n i\u00e7eri\u011finin baz\u0131 k\u0131s\u0131mlar\u0131 (baz\u0131 durumlarda).<\/p>\n<p>Forensic raporlar e-posta g\u00fcvenli\u011fi a\u00e7\u0131s\u0131ndan \u00e7ok \u00f6nemli olabilir \u00e7\u00fcnk\u00fc bu raporlar, olas\u0131 g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131, yap\u0131land\u0131rma hatalar\u0131n\u0131 ya da potansiyel k\u00f6t\u00fcye kullan\u0131m olaylar\u0131n\u0131 ortaya \u00e7\u0131karmada detayl\u0131 bilgi sunar. Ancak, bu raporlar\u0131n i\u00e7erdikleri hassas bilgiler nedeniyle dikkatli bir \u015fekilde y\u00f6netilmeleri ve g\u00fcvenlik \u00f6nlemleri alt\u0131nda saklanmalar\u0131 gerekir. Ayr\u0131ca t\u00fcm e-posta servis sa\u011flay\u0131c\u0131lar\u0131 forensic raporlar\u0131 g\u00f6ndermeyebilir ve bu raporlar b\u00fcy\u00fck veri hacmine sahip olabilece\u011finden g\u00f6nderildikleri adreslerin y\u00f6netimi ve analizi de \u00f6nemlidir.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"pct-Percentage\"><\/span>pct (Percentage)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; `pct` parametresi politikan\u0131n ne kadar e-posta trafi\u011fine uygulanaca\u011f\u0131n\u0131 y\u00fczde olarak belirtir. De\u011feri 0 ile 100 aras\u0131nda de\u011fi\u015ftirilebilir.<\/p>\n<p>&#8211; \u00d6rnek: E\u011fer de\u011fer `pct=100` olarak ayarlanm\u0131\u015fsa, t\u00fcm e-postalar DMARC politikan\u0131za g\u00f6re i\u015flem g\u00f6r\u00fcr. E\u011fer `pct=50` ise, yaln\u0131zca g\u00f6nderilen e-postalar\u0131n yar\u0131s\u0131 \u00fczerinde DMARC politikan\u0131z uygulan\u0131r.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"sp-Subdomain-Policy\"><\/span>sp (Subdomain Policy)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; `sp` parametresi, <a href=\"https:\/\/www.ihs.com.tr\/blog\/subdomain-alt-alan-adi-nedir-nasil-kullanilmalidir\/\" target=\"_blank\" rel=\"noopener\">alt domainler (subdomain)<\/a> i\u00e7in uygulanacak olan politikay\u0131 belirtir. Ana <a href=\"https:\/\/www.ihs.com.tr\/domain\/alan-adi-domain-tescili.html\" target=\"_blank\" rel=\"noopener\">domain<\/a> i\u00e7in belirledi\u011finiz politikadan farkl\u0131 bir politika uygulamak isterseniz kullan\u0131l\u0131r.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"adkim-Alignment-mode-for-DKIM\"><\/span>adkim (Alignment mode for DKIM)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; `adkim` parametresi, DKIM do\u011frulamas\u0131n\u0131n nas\u0131l bir uyum i\u00e7inde olaca\u011f\u0131n\u0131 ifade eder. \u0130ki de\u011fer alabilir:<\/p>\n<p>&#8211; `s` (strict): Sadece &#8220;d=&#8221; alan\u0131 &#8220;from&#8221; adresiyle tam olarak e\u015fle\u015fti\u011finde DKIM ge\u00e7erlidir.<\/p>\n<p>&#8211; `r` (relaxed): &#8220;d=&#8221; alan\u0131 &#8220;from&#8221; adresinin \u00fcst domaini ile e\u015fle\u015fiyorsa yeterlidir.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"aspf-Alignment-mode-for-SPF\"><\/span>aspf (Alignment mode for SPF)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; `aspf` parametresi, SPF do\u011frulamas\u0131n\u0131n uyum modunu belirtir ve `adkim` ile benzer \u015fekilde `s` (strict) veya `r` (relaxed) de\u011ferlerinden birini al\u0131r.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"ri-Reporting-Interval\"><\/span>ri (Reporting Interval)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; `ri` parametresi, toplu raporlar\u0131n ne kadar s\u0131kl\u0131kla g\u00f6nderilece\u011fini belirler. Bu de\u011fer genellikle saniye cinsinden ifade edilir.<\/p>\n<p>&#8211; \u00d6rnek: `ri=86400` 24 saatte bir rapor almak i\u00e7in kullan\u0131l\u0131r (86400 saniye bir g\u00fcn\u00fc temsil eder).<\/p>\n<p>&nbsp;<\/p>\n<p>DMARC kayd\u0131n\u0131z\u0131 yazarken bu parametreleri ve verdi\u011finiz bilgilerin do\u011frulu\u011funu kontrol etmek \u00f6nemlidir. Yanl\u0131\u015f bir yap\u0131land\u0131rma, e-posta teslim edilebilirli\u011fi \u00fczerinde olumsuz etkiler yaratabilir ve hatta me\u015fru e-postalar\u0131n\u0131z\u0131n spam olarak i\u015faretlenmesine yol a\u00e7abilir.<\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"DMARC-Kaydinizi-Nasil-Uygularsiniz\"><\/span>DMARC Kayd\u0131n\u0131z\u0131 Nas\u0131l Uygulars\u0131n\u0131z?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>DMARC politikan\u0131z\u0131 olu\u015fturun ve yukar\u0131da verilen \u00f6rne\u011fi dikkate alarak bir kay\u0131t metni haz\u0131rlay\u0131n.<\/li>\n<li>DNS y\u00f6netim panelinizde bir TXT kayd\u0131 olu\u015fturun ve `_dmarc.domainad\u0131n\u0131z.com` gibi bir isme sahip olacak \u015fekilde ayarlay\u0131n.<\/li>\n<li>Olu\u015fturdu\u011funuz DMARC metnini TXT kayd\u0131 olarak yap\u0131\u015ft\u0131r\u0131n.<\/li>\n<li>De\u011fi\u015fikliklerin DNS&#8217;de yay\u0131lmas\u0131 biraz zaman alabilir.<\/li>\n<li>DMARC kayd\u0131n\u0131z\u0131n do\u011fru \u015fekilde yay\u0131ld\u0131\u011f\u0131n\u0131 ve \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, \u00e7e\u015fitli \u00e7evrimi\u00e7i DMARC do\u011frulama ara\u00e7lar\u0131 kullanarak kontrol edin.<\/li>\n<\/ol>\n<p>DMARC, e-posta g\u00fcvenli\u011fi i\u00e7in kritik bir bile\u015fendir ve \u00f6zellikle e-posta tabanl\u0131 tehditlerin giderek artt\u0131\u011f\u0131 g\u00fcn\u00fcm\u00fczde, kurulu\u015flar\u0131n itibar\u0131n\u0131 korumak ve m\u00fc\u015fterilerini g\u00fcvende tutmak i\u00e7in \u015fartt\u0131r.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>E-posta g\u00fcvenli\u011finin \u00f6ncelikli konular\u0131ndan biri olan DMARC (Domain-based Message Authentication, Reporting &amp; Conformance), domainler \u00fczerinden yap\u0131lan doland\u0131r\u0131c\u0131l\u0131k ve kimlik taklitlerine kar\u015f\u0131 \u00f6nemli&hellip;<\/p>\n","protected":false},"author":3,"featured_media":14842,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[398],"tags":[],"class_list":["post-14838","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\/14838","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=14838"}],"version-history":[{"count":2,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/14838\/revisions"}],"predecessor-version":[{"id":14840,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/posts\/14838\/revisions\/14840"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/media\/14842"}],"wp:attachment":[{"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=14838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=14838"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ihs.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=14838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}