{"id":4789,"date":"2024-10-01T09:39:08","date_gmt":"2024-10-01T06:39:08","guid":{"rendered":"https:\/\/uzmanposta.com\/blog\/?p=4789"},"modified":"2025-10-02T02:24:24","modified_gmt":"2025-10-01T23:24:24","slug":"spf-dkim-dmarc","status":"publish","type":"post","link":"https:\/\/uzmanposta.com\/blog\/spf-dkim-dmarc\/","title":{"rendered":"SPF, DKIM, DMARC: E-Posta G\u00fcvenli\u011finiz ve Alan Ad\u0131n\u0131z i\u00e7in Neden \u00d6nemlidir?"},"content":{"rendered":"\n<p>E-posta kimlik do\u011frulama; SPF, DKIM ve DMARC \u00fczerine kuruludur. Bu teknik ve temel terimler e-posta kimlik do\u011frulamas\u0131nda ustala\u015fman\u0131za ve marka itibar\u0131n\u0131z\u0131 koruman\u0131za yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<p>Kimlik do\u011frulama, &#8220;bir \u015feyin do\u011fru, ger\u00e7ek veya ge\u00e7erli oldu\u011funu kan\u0131tlama veya g\u00f6sterme s\u00fcreci veya eylemi&#8221; olarak tan\u0131mlan\u0131r. E-posta kimlik do\u011frulamas\u0131ndan bahsedildi\u011finde, <a href=\"https:\/\/uzmanposta.com\/blog\/spf-kaydi-nedir-nasil-yapilir\/\">SPF<\/a>, <a href=\"https:\/\/uzmanposta.com\/blog\/dkim-nedir\/\">DKIM<\/a> ve <a href=\"https:\/\/uzmanposta.com\/dmarc-sorgulama\/\">DMARC<\/a>&#8216;den bahsediliyor demektir. Bu ara\u00e7lar, bir e-posta mesaj\u0131n\u0131n ger\u00e7ek oldu\u011funu ve iddia etti\u011fi ki\u015fiden geldi\u011fini kan\u0131tlar.<\/p>\n\n\n\n<p>Peki e-posta kimlik do\u011frulamas\u0131 neden \u00f6nemlidir?&nbsp;<\/p>\n\n\n\n<p>E-posta d\u00fcnyas\u0131nda dola\u015fan spam ve kimlik av\u0131 mesajlar\u0131n\u0131n yo\u011funlu\u011fu nedeniyle mesajlar\u0131n\u0131z\u0131n do\u011fru \u015fekilde sa\u011flanmas\u0131 ve do\u011frulanmas\u0131 \u00e7ok daha \u00f6nemli hale gelmektedir. E-posta kimlik do\u011frulama, dijital kimlik kart\u0131n\u0131z gibi davran\u0131r ve Posta Kutusu Sa\u011flay\u0131c\u0131lar\u0131n\u0131n (MBP&#8217;ler) ve spam filtreleme sistemlerinin me\u015fru e-postan\u0131z\u0131 tan\u0131mas\u0131na yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<p>Bir e-posta mesaj\u0131n\u0131n iddia etti\u011fi ki\u015fiden geldi\u011fini do\u011frulamaya yard\u0131mc\u0131 olan iki birincil kimlik do\u011frulama protokol\u00fc SPF ve DKIM&#8217;dir. SPF ve DKIM&#8217;in \u00fcst\u00fcne DMARC eklenir. DMARC, SPF ve DKIM kullan\u0131r ve al\u0131c\u0131 e-posta sunucular\u0131na kimli\u011fi do\u011frulanmam\u0131\u015f posta ald\u0131klar\u0131nda ne yapmalar\u0131 gerekti\u011fi konusunda bir dizi talimat sa\u011flar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">E-posta Kimlik Do\u011frulamas\u0131na Olan \u0130htiyac\u0131 Anlamak<\/h2>\n\n\n\n<p>E-posta, sistemlere s\u0131zmak, hassas verileri \u00e7almak veya k\u00f6t\u00fc ama\u00e7l\u0131 yaz\u0131l\u0131m yaymak isteyen siber su\u00e7lular i\u00e7in uzun zamand\u0131r tercih edilen bir ara\u00e7t\u0131r. En yayg\u0131n siber tehditler aras\u0131nda, bilgisayar korsanlar\u0131n\u0131n al\u0131c\u0131lar\u0131 ki\u015fisel bilgileri if\u015fa etmeye veya k\u00f6t\u00fc ama\u00e7l\u0131 ba\u011flant\u0131lara t\u0131klamaya kand\u0131rmak i\u00e7in g\u00fcvenilir varl\u0131klar\u0131 taklit etti\u011fi kimlik av\u0131 sald\u0131r\u0131lar\u0131 yer al\u0131r. Bilgisayar korsanlar\u0131n\u0131n g\u00f6nderenin adresini taklit etti\u011fi e-posta sahtecili\u011finin artan tehdidi, sorunu daha da k\u00f6t\u00fcle\u015ftirmi\u015ftir.<\/p>\n\n\n\n<p>E-posta kimlik do\u011frulama protokolleri, bir e-postan\u0131n kayna\u011f\u0131n\u0131n ger\u00e7ekli\u011fini do\u011frulamak i\u00e7in mekanizmalar sa\u011flayarak bu sorunlar\u0131 ele almak \u00fczere tasarlanm\u0131\u015ft\u0131r.&nbsp;<\/p>\n\n\n\n<p>A\u015fa\u011f\u0131da bu protokollerin her birini ayr\u0131nt\u0131l\u0131 olarak bulabilirsiniz:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. SPF (Sender Policy Framework)<\/h3>\n\n\n\n<p>Sender Policy Framework (SPF), alan ad\u0131 sahiplerinin alan adlar\u0131 ad\u0131na e-posta g\u00f6ndermeye yetkili posta sunucular\u0131n\u0131 tan\u0131mlamalar\u0131na olanak tan\u0131yan bir e-posta kimlik do\u011frulama protokol\u00fcd\u00fcr. SPF kay\u0131tlar\u0131 <a href=\"https:\/\/uzmanposta.com\/blog\/dns-nedir-dns-ayarlari-degistirme\/\">DNS&#8217;te (Alan Ad\u0131 Sistemi)<\/a> yay\u0131nlan\u0131r ve belirli bir alan ad\u0131 i\u00e7in e-posta g\u00f6ndermeye yetkili onayl\u0131 IP adresleri ve ana bilgisayar adlar\u0131n\u0131n bir listesini belirtir.<\/p>\n\n\n\n<p>SPF a\u015fa\u011f\u0131daki \u015fekilde \u00e7al\u0131\u015f\u0131r:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Bir e-posta al\u0131nd\u0131\u011f\u0131nda, al\u0131c\u0131n\u0131n sunucusu kaynak IP&#8217;nin onayl\u0131 listeyle e\u015fle\u015fip e\u015fle\u015fmedi\u011fini do\u011frulamak i\u00e7in g\u00f6nderenin alan ad\u0131n\u0131n SPF kayd\u0131n\u0131 kontrol eder.<\/li><li>Kaynak IP onayl\u0131 listedeyse, e-posta me\u015fru kabul edilir; aksi takdirde \u015f\u00fcpheli olarak i\u015faretlenebilir.<\/li><li>SPF, e-posta sahtecili\u011fini \u00f6nlemeye yard\u0131mc\u0131 olur ve yaln\u0131zca yetkili sunucular\u0131n bir alan ad\u0131 ad\u0131na e-posta g\u00f6nderebilmesini sa\u011flar.<\/li><\/ul>\n\n\n\n<p><strong>SPF Kayd\u0131 Aktif Etme<\/strong><\/p>\n\n\n\n<p>\u00c7o\u011fu e-posta hizmeti basit SPF kayd\u0131 yap\u0131land\u0131rma talimatlar\u0131 sa\u011flar ve ard\u0131ndan zor k\u0131sm\u0131 sizin i\u00e7in halleder. Uzman Posta gibi sa\u011flay\u0131c\u0131lar, SPF\u2019yi ge\u00e7meye ba\u015flamak i\u00e7in herhangi bir DNS kayd\u0131 eklemenizi gerektirmez. Yani Uzman Posta arac\u0131l\u0131\u011f\u0131yla g\u00f6nderilen e-posta\u2019lar\u0131 SPF\u2019ye ge\u00e7irmek i\u00e7in hi\u00e7bir \u015fey yapman\u0131z gerekmez.<\/p>\n\n\n\n<p><strong>SPF Kayd\u0131 Sorgulama<\/strong><\/p>\n\n\n\n<p>Birden fazla y\u00f6ntem ile SPF sorgulanabilir. Birinci y\u00f6ntem online SPF sorgulama sitelerinden yararlanabilirsiniz. Linke t\u0131klayarak <a href=\"https:\/\/uzmanposta.com\/spf-kaydi-sorgulama\/\" target=\"_blank\" rel=\"noreferrer noopener\">Uzman Posta SPF Kayd\u0131 Sorgulama<\/a> arac\u0131n\u0131 kullanabilirsiniz.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"750\" height=\"375\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2022\/10\/spf-kaydi-sorgulama.jpeg\" alt=\"\" class=\"wp-image-2693\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2022\/10\/spf-kaydi-sorgulama.jpeg 750w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2022\/10\/spf-kaydi-sorgulama-300x150.jpeg 300w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2022\/10\/spf-kaydi-sorgulama-360x180.jpeg 360w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure><\/div>\n\n\n\n<p>\u0130kinci y\u00f6ntem ise Bilgisayar\u0131n\u0131z\u0131n terminal ekran\u0131nda veya ba\u015flat men\u00fcs\u00fcnde bulunan \u00e7al\u0131\u015ft\u0131r uygulamas\u0131nda CMD yazarak gelen ekranda a\u015fa\u011f\u0131daki komutlarla SPF sorgulamas\u0131 yapabilirsiniz.<\/p>\n\n\n\n<p><strong><code>nslookup -q=TXT sirketadiniz.com<\/code><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. DKIM (DomainKeys Identified Mail)<\/h3>\n\n\n\n<p>DomainKeys Identified Mail (DKIM), bir di\u011fer kritik e-posta kimlik do\u011frulama protokol\u00fcd\u00fcr. Giden e-postalara dijital bir imza ekleyerek al\u0131c\u0131lar\u0131n e-postan\u0131n aktar\u0131m s\u0131ras\u0131nda de\u011fi\u015ftirilmedi\u011fini ve ger\u00e7ekten iddia edilen alan ad\u0131ndan geldi\u011fini do\u011frulamas\u0131n\u0131 sa\u011flar.<\/p>\n\n\n\n<p>DKIM a\u015fa\u011f\u0131daki \u015fekilde \u00e7al\u0131\u015f\u0131r:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Bir e-posta g\u00f6nderildi\u011finde, g\u00f6nderenin sunucusu e-postan\u0131n i\u00e7eri\u011fine ve baz\u0131 \u00f6zel anahtarlara dayal\u0131 olarak benzersiz bir imza olu\u015fturur.<\/li><li>Genel anahtar, g\u00f6nderenin DNS kayd\u0131nda yay\u0131nlan\u0131r.<\/li><li>E-posta\u2019y\u0131 ald\u0131ktan sonra al\u0131c\u0131n\u0131n sunucusu genel anahtar\u0131 g\u00f6nderenin DNS kayd\u0131ndan al\u0131r ve e-posta\u2019n\u0131n imzas\u0131n\u0131 do\u011frulamak i\u00e7in kullan\u0131r.<\/li><li>\u0130mza e\u015fle\u015firse, e-posta ger\u00e7ek kabul edilir; e\u015fle\u015fmezse \u015f\u00fcpheli veya reddedilebilir.<\/li><li>DKIM, e-postan\u0131n g\u00fcvenilirli\u011fini art\u0131rarak e-postan\u0131n kurcalanmas\u0131n\u0131 ve kimli\u011fe b\u00fcr\u00fcn\u00fclmesini \u00f6nlemede \u00f6zellikle etkilidir.<\/li><\/ul>\n\n\n\n<p><strong>DKIM Kayd\u0131 Aktif Etme<\/strong><\/p>\n\n\n\n<p>E-posta hizmeti ald\u0131\u011f\u0131n\u0131z sunucuda DKIM \u00f6zelli\u011fini aktifle\u015ftirip, ortaya \u00e7\u0131kan text metnini (TXT kayd\u0131) alan ad\u0131n\u0131z\u0131n DNS ayarlar\u0131na ekleyerek DKIM kayd\u0131n\u0131z\u0131 olu\u015fturabilirsiniz.<\/p>\n\n\n\n<p>E\u011fer e-posta servis sa\u011flay\u0131c\u0131 olarak Uzman Posta\u2019y\u0131 kullan\u0131yorsan\u0131z, yenipanel.uzmanposta.com \u00fczerinden alan ad\u0131n\u0131z\u0131n i\u00e7ine girdikten sonra sol tarafta bulunan men\u00fc \u00fczerinden G\u00fcvenlik b\u00f6l\u00fcm\u00fcn\u00fcn i\u00e7inden DKIM kayd\u0131n\u0131z\u0131 kontrol edebilirsiniz.<\/p>\n\n\n\n<p><strong>DKIM Kayd\u0131 Sorgulama<\/strong><\/p>\n\n\n\n<p>Online DKIM kayd\u0131 sorgulama sitelerinden yararlanabilirsiniz. Linke t\u0131klayarak <a href=\"https:\/\/uzmanposta.com\/spf-dkim-sorgulama\/\" target=\"_blank\" rel=\"noreferrer noopener\">Uzman Posta DKIM Kayd\u0131 Sorgulama<\/a> arac\u0131n\u0131 kullanabilirsiniz.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"750\" height=\"375\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2022\/10\/dkim-kaydi-sorgulama.jpeg\" alt=\"\" class=\"wp-image-2694\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2022\/10\/dkim-kaydi-sorgulama.jpeg 750w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2022\/10\/dkim-kaydi-sorgulama-300x150.jpeg 300w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2022\/10\/dkim-kaydi-sorgulama-360x180.jpeg 360w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">3. DMARC (Domain-based Message Authentication, Reporting, and Conformance)<\/h3>\n\n\n\n<p>Domain-based Message Authentication, Reporting, and Conformance (DMARC), SPF ve DKIM \u00fczerine kurulu kapsaml\u0131 bir e-posta kimlik do\u011frulama protokol\u00fcd\u00fcr. DMARC, alan ad\u0131 sahiplerinin, al\u0131c\u0131lar\u0131n kimlik do\u011frulama kontrollerinde ba\u015far\u0131s\u0131z olan alanlar\u0131ndan gelen e-postalar\u0131 nas\u0131l ele almalar\u0131 gerekti\u011fini belirleyen politikalar belirlemelerine olanak tan\u0131r. Ayr\u0131ca, alan ad\u0131 sahiplerine alan adlar\u0131yla ilgili e-posta etkinli\u011fi hakk\u0131nda bilgi veren bir raporlama mekanizmas\u0131 da sa\u011flar.<\/p>\n\n\n\n<p>DMARC a\u015fa\u011f\u0131daki \u015fekilde \u00e7al\u0131\u015f\u0131r:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Bir alan ad\u0131 sahibi, DNS kay\u0131tlar\u0131nda bir DMARC politikas\u0131 yay\u0131nlar ve bir e-posta SPF veya DKIM kontrollerinde ba\u015far\u0131s\u0131z oldu\u011funda hangi eylemin (\u00f6rne\u011fin karantinaya alma, reddetme veya izleme) yap\u0131lmas\u0131 gerekti\u011fini belirtir.<\/li><li>Bir e-posta al\u0131nd\u0131\u011f\u0131nda, al\u0131c\u0131n\u0131n sunucusu g\u00f6nderenin alan\u0131n\u0131n DMARC politikas\u0131n\u0131 kontrol eder.<\/li><li>DMARC politikas\u0131na g\u00f6re, al\u0131c\u0131n\u0131n sunucusu e-postay\u0131 spam olarak i\u015faretleme veya reddetme gibi uygun eylemi ger\u00e7ekle\u015ftirir. DMARC yaln\u0131zca kimlik av\u0131 ve sahtecili\u011fe kar\u015f\u0131 koruma sa\u011flamakla kalmaz, ayn\u0131 zamanda alan ad\u0131 sahiplerinin e-posta alan adlar\u0131n\u0131n itibar\u0131 \u00fczerinde daha iyi kontrol sahibi olmalar\u0131n\u0131 ve olas\u0131 k\u00f6t\u00fcye kullan\u0131mlar\u0131 izlemelerini sa\u011flar.<\/li><\/ul>\n\n\n\n<p><strong>DMARC Kayd\u0131 Aktif Etme<\/strong><\/p>\n\n\n\n<p>DMARC daima SPF ve DKIM kimlik do\u011frulama ve denetim y\u00f6ntemleri ile birlikte kullan\u0131l\u0131r. DMARC kayd\u0131n\u0131z\u0131 olu\u015fturmak i\u00e7in SPF ve DKIM kay\u0131tlar\u0131 tamamlanm\u0131\u015f alan ad\u0131n\u0131z\u0131n DNS y\u00f6netimine eri\u015fip, DMARC kay\u0131t etiketleri ile bir TXT kayd\u0131 olu\u015fturman\u0131z yeterlidir.<\/p>\n\n\n\n<p>DMARC kayd\u0131, alan ad\u0131n\u0131n DNS y\u00f6netim ekran\u0131 b\u00f6l\u00fcm\u00fcnden(TXT kayd\u0131 olarak) kolayl\u0131kla g\u00fcncellenir.<\/p>\n\n\n\n<p><strong>DMARC Kayd\u0131 Sorgulama<\/strong><\/p>\n\n\n\n<p>Online DKIM kayd\u0131 sorgulama sitelerinden yararlanabilirsiniz. Linke t\u0131klayarak <a href=\"https:\/\/uzmanposta.com\/dmarc-sorgulama\/\">Uzman Posta DMARC Kayd\u0131 Sorgulama<\/a> arac\u0131n\u0131 kullanabilirsiniz.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2024\/08\/dmarc-kaydi-sorgulama-1024x576.jpeg\" alt=\"\" class=\"wp-image-4797\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2024\/08\/dmarc-kaydi-sorgulama-1024x576.jpeg 1024w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2024\/08\/dmarc-kaydi-sorgulama-300x169.jpeg 300w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2024\/08\/dmarc-kaydi-sorgulama-768x432.jpeg 768w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2024\/08\/dmarc-kaydi-sorgulama-750x422.jpeg 750w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2024\/08\/dmarc-kaydi-sorgulama-1140x641.jpeg 1140w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2024\/08\/dmarc-kaydi-sorgulama.jpeg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">SPF, DKIM, DMARC Protokolleri Neden \u00d6nemlidir?<\/h2>\n\n\n\n<p>Bu e-posta kimlik do\u011frulama protokolleri toplu olarak e-posta ileti\u015fimlerini g\u00fcvence alt\u0131na almada \u00f6nemli bir rol oynar.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. E-posta Sahtecili\u011fini \u00d6nleme<\/h3>\n\n\n\n<p>SPF, DKIM ve DMARC, e-posta sahtecili\u011fini engellemek i\u00e7in birlikte \u00e7al\u0131\u015f\u0131r ve siber su\u00e7lular\u0131n me\u015fru g\u00f6ndericileri taklit etmesini son derece zorla\u015ft\u0131r\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Spam&#8217;i Azaltma<\/h3>\n\n\n\n<p>Bu protokoller, g\u00f6nderenin ger\u00e7ekli\u011fini do\u011frulayarak gelen kutular\u0131ndaki spam ve istenmeyen e-postalar\u0131 azaltmaya yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. G\u00fcveni Art\u0131rma<\/h3>\n\n\n\n<p>Al\u0131c\u0131lar bir e-postan\u0131n kimlik do\u011frulama kontrollerinden ge\u00e7ti\u011fini g\u00f6rd\u00fcklerinde, bunun me\u015fru bir kaynaktan geldi\u011finden daha fazla emin olabilir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Marka \u0130tibar\u0131n\u0131 Koruma<\/h3>\n\n\n\n<p>\u00d6zellikle DMARC, i\u015fletmelerin alan adlar\u0131ndan gelen yetkisiz e-postalar\u0131n nas\u0131l ele al\u0131nmas\u0131 gerekti\u011fini belirtmelerine olanak tan\u0131yarak marka itibarlar\u0131n\u0131 korumalar\u0131na yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Daha \u0130yi E-posta Y\u00f6netimini Etkinle\u015ftirme<\/h3>\n\n\n\n<p>DMARC&#8217;nin raporlama mekanizmas\u0131, e-posta etkinli\u011fi hakk\u0131nda de\u011ferli bilgiler sunarak i\u015fletmelerin e-posta kullan\u0131m\u0131n\u0131 ve k\u00f6t\u00fcye kullan\u0131m\u0131n\u0131 izlemesine yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPF, DKIM ve DMARC&#8217;\u0131 Uygulama<\/h2>\n\n\n\n<p>Bu e-posta kimlik do\u011frulama protokollerinden tam olarak yararlanmak i\u00e7in i\u015fletmeler a\u015fa\u011f\u0131daki ad\u0131mlar\u0131 izlemelidir:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>SPF Kay\u0131tlar\u0131n\u0131 Olu\u015fturun ve Yay\u0131nlay\u0131n:<\/strong> Alan ad\u0131n\u0131z i\u00e7in yetkili g\u00f6nderen IP adreslerinin ve ana bilgisayar adlar\u0131n\u0131n listesini bir SPF kayd\u0131nda tan\u0131mlay\u0131n. Bu kayd\u0131 DNS&#8217;inizde yay\u0131nlay\u0131n.<\/li><li><strong>DKIM \u0130mzalama Ayarlay\u0131n:<\/strong> E-posta sunucular\u0131n\u0131z\u0131 giden e-postalar\u0131 DKIM ile imzalamak \u00fczere yap\u0131land\u0131r\u0131n. Genel anahtar\u0131 DNS&#8217;inizde yay\u0131nlay\u0131n.<\/li><li><strong>DMARC Politikalar\u0131n\u0131 Da\u011f\u0131t\u0131n: <\/strong>Al\u0131c\u0131lar\u0131n SPF veya DKIM kontrollerinde ba\u015far\u0131s\u0131z olan e-postalar\u0131 nas\u0131l ele almas\u0131 gerekti\u011fini belirten bir DMARC politikas\u0131 olu\u015fturun ve yay\u0131nlay\u0131n. Politikalar\u0131n\u0131z\u0131 ince ayarlamak i\u00e7in DMARC raporlar\u0131n\u0131 izleyin.<\/li><li><strong>D\u00fczenli Olarak \u0130zleyin ve G\u00fcncelleyin:<\/strong> Bu protokollerin etkinli\u011fini s\u00fcrekli olarak izleyin ve gerekti\u011finde g\u00fcncelleyin.<\/li><\/ul>\n\n\n\n<p>Sonu\u00e7 olarak e-posta tehditlerinin giderek daha karma\u015f\u0131k ve zararl\u0131 hale geldi\u011fi bu dijital \u00e7a\u011fda, SPF, DKIM ve DMARC gibi e-posta kimlik do\u011frulama protokolleri, bireyleri ve i\u015fletmeleri e-posta sahtecili\u011fi, kimlik av\u0131 ve di\u011fer k\u00f6t\u00fc ama\u00e7l\u0131 faaliyetlerden korumak i\u00e7in olmazsa olmaz ara\u00e7lard\u0131r. Bu protokolleri uygulayarak ve en iyi uygulamalar hakk\u0131nda bilgi sahibi olarak e-posta g\u00fcvenli\u011finizi art\u0131rabilir, g\u00fcven olu\u015fturabilir ve dijital ileti\u015fim kanallar\u0131n\u0131z\u0131 koruyabilirsiniz. E-posta kimlik do\u011frulamas\u0131 yaln\u0131zca teknolojik bir gereklilik de\u011fil; daha g\u00fcvenli ve daha emniyetli bir \u00e7evrimi\u00e7i d\u00fcnyaya do\u011fru at\u0131lm\u0131\u015f temel bir ad\u0131md\u0131r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Uzman Posta Unified Mail Gateway B\u00fct\u00fcnle\u015fik E-posta G\u00fcvenlik \u00c7\u00f6z\u00fcm\u00fc ile SPF, DKIM ve DMARC Yap\u0131land\u0131rmas\u0131n\u0131 Otomatikle\u015ftirin<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"307\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2025\/10\/unified-mail-gateway-butunlesik-e-posta-guvenlik-cozumu-1024x307.jpeg\" alt=\"\" class=\"wp-image-6265\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2025\/10\/unified-mail-gateway-butunlesik-e-posta-guvenlik-cozumu-1024x307.jpeg 1024w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2025\/10\/unified-mail-gateway-butunlesik-e-posta-guvenlik-cozumu-300x90.jpeg 300w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2025\/10\/unified-mail-gateway-butunlesik-e-posta-guvenlik-cozumu-768x230.jpeg 768w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2025\/10\/unified-mail-gateway-butunlesik-e-posta-guvenlik-cozumu-750x225.jpeg 750w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2025\/10\/unified-mail-gateway-butunlesik-e-posta-guvenlik-cozumu-1140x342.jpeg 1140w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2025\/10\/unified-mail-gateway-butunlesik-e-posta-guvenlik-cozumu.jpeg 1194w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p>SPF, DKIM ve DMARC, e-posta g\u00fcvenli\u011finizin ve alan ad\u0131 itibar\u0131n\u0131z\u0131n temelidir, ancak do\u011fru \u015fekilde yap\u0131land\u0131r\u0131lmalar\u0131 gerekir. Bu noktada Uzman Posta Unified Mail Gateway B\u00fct\u00fcnle\u015fik E-posta G\u00fcvenlik \u00c7\u00f6z\u00fcm\u00fc, bu karma\u015f\u0131k protokolleri kolayca yap\u0131land\u0131rman\u0131z\u0131 sa\u011flar. DMARC kay\u0131tlar\u0131 ile DNS tan\u0131mlar\u0131n\u0131 otomatik olarak haz\u0131rlar, \u00fccretsiz y\u00f6netilen DNS hizmetiyle DNS entegrasyonu sunar. Bu profesyonel ve hatas\u0131z yap\u0131land\u0131rma, e-postalar\u0131n\u0131z\u0131n spoofing sald\u0131r\u0131lar\u0131na kar\u015f\u0131 korunmas\u0131n\u0131 sa\u011flarken, al\u0131c\u0131 sistemler nezdinde g\u00fcvenilirli\u011finizi maksimize eder.<\/p>\n\n\n\n<p>UMG&#8217;nin g\u00fcvenlik kapsam\u0131, sadece kurulumla s\u0131n\u0131rl\u0131 kalmaz. Sundu\u011fu DMARC Rapor ve Analizleri sayesinde, alan ad\u0131n\u0131zdan g\u00f6nderilen t\u00fcm mesajlar\u0131 aktif olarak izleyebilir, sahte postalar\u0131 h\u0131zla tespit edebilir ve do\u011frulama ba\u015far\u0131s\u0131zl\u0131klar\u0131n\u0131n nedenlerini an\u0131nda g\u00f6rebilirsiniz.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">En \u00c7ok Sorulan Sorular<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. SPF kayd\u0131 nedir ve neden \u00f6nemlidir?<\/h3>\n\n\n\n<p>SPF (Sender Policy Framework) kayd\u0131, bir alan ad\u0131 ad\u0131na e-posta mesajlar\u0131 g\u00f6ndermeye yetkili IP adreslerini belirten bir DNS kayd\u0131 t\u00fcr\u00fcd\u00fcr. \u00d6nemlidir \u00e7\u00fcnk\u00fc kimlik av\u0131 sald\u0131r\u0131lar\u0131n\u0131 \u00f6nlemeye yard\u0131mc\u0131 olur ve e-posta kimlik do\u011frulamas\u0131n\u0131 sa\u011flayarak e-postalar\u0131n spam olarak i\u015faretlenme olas\u0131l\u0131\u011f\u0131n\u0131 azalt\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Alan ad\u0131 tabanl\u0131 mesaj kimlik do\u011frulamas\u0131 nas\u0131l \u00e7al\u0131\u015f\u0131r?<\/h3>\n\n\n\n<p>Alan ad\u0131 tabanl\u0131 mesaj kimlik do\u011frulamas\u0131, e-posta mesajlar\u0131n\u0131n yetkili sunuculardan g\u00f6nderildi\u011fini do\u011frulamak i\u00e7in DNS kay\u0131tlar\u0131n\u0131 kullanarak \u00e7al\u0131\u015f\u0131r. E-posta g\u00f6ndericisinin me\u015fruiyetini sa\u011flamak i\u00e7in SPF, DKIM (DomainKeys Identified Mail) ve DMARC (Domain-based Message Authentication, Reporting, and Conformance) gibi protokolleri i\u00e7erir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. DomainKeys Identified Mail (DKIM) nedir ve e-posta g\u00fcvenli\u011fini nas\u0131l art\u0131r\u0131r?<\/h3>\n\n\n\n<p>DKIM, e-posta mesajlar\u0131na dijital imza ekleyen bir e-posta kimlik do\u011frulama protokol\u00fcd\u00fcr. Bu imza, e-postan\u0131n aktar\u0131m s\u0131ras\u0131nda de\u011fi\u015ftirilmedi\u011finden ve me\u015fru bir kaynaktan geldi\u011finden emin olmak i\u00e7in al\u0131c\u0131 posta sunucusu taraf\u0131ndan do\u011frulan\u0131r. Bu, e-posta sahtecili\u011fini \u00f6nleyerek e-posta g\u00fcvenli\u011fini art\u0131r\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. DNS kay\u0131tlar\u0131 e-posta kimlik do\u011frulamas\u0131 i\u00e7in neden \u00f6nemlidir?<\/h3>\n\n\n\n<p>DNS kay\u0131tlar\u0131, bir alan ad\u0131 i\u00e7in e-posta g\u00f6ndermeye yetkili IP adresleri hakk\u0131nda bilgi depolad\u0131klar\u0131 i\u00e7in e-posta kimlik do\u011frulamas\u0131 i\u00e7in \u00f6nemlidir. SPF, DKIM ve DMARC gibi kay\u0131tlar, e-posta iletilerinin ger\u00e7ekli\u011fini do\u011frulamaya ve e-posta g\u00f6ndermek i\u00e7in alan ad\u0131n\u0131n yetkisiz kullan\u0131m\u0131n\u0131 \u00f6nlemeye yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. IP adresleri SPF ve DKIM&#8217;de hangi rol\u00fc oynar?<\/h3>\n\n\n\n<p>IP adresleri, bir alan ad\u0131 ad\u0131na e-posta iletileri g\u00f6ndermesine izin verilen posta sunucular\u0131n\u0131 belirleyerek SPF ve DKIM&#8217;de \u00f6nemli bir rol oynar. SPF kay\u0131tlar\u0131nda, e-posta kayna\u011f\u0131n\u0131 do\u011frulamak i\u00e7in belirli IP adresleri listelenirken, DKIM alan ad\u0131na \u00f6zg\u00fc IP adreslerine ba\u011fl\u0131 kriptografik imzalar kullan\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. Bir alan ad\u0131 sahibi SPF kay\u0131tlar\u0131n\u0131 nas\u0131l ayarlayabilir?<\/h3>\n\n\n\n<p>Bir alan ad\u0131 sahibi, alan ad\u0131n\u0131n DNS ayarlar\u0131na bir TXT kayd\u0131 ekleyerek SPF kay\u0131tlar\u0131 ayarlayabilir. Bu kay\u0131t, alan ad\u0131na e-posta g\u00f6ndermesine izin verilen yetkili IP adreslerinin veya e-posta servis sa\u011flay\u0131c\u0131lar\u0131n\u0131n bir listesini i\u00e7ermelidir. SPF kayd\u0131, g\u00f6nderenin me\u015fruiyetini do\u011frulamaya ve e-posta sahtecili\u011fini \u00f6nlemeye yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. E-posta kimlik do\u011frulamas\u0131nda bir e-posta servis sa\u011flay\u0131c\u0131s\u0131n\u0131n amac\u0131 nedir?<\/h3>\n\n\n\n<p>Bir e-posta servis sa\u011flay\u0131c\u0131s\u0131 (ESP), e-posta teslimat\u0131n\u0131 kolayla\u015ft\u0131r\u0131r ve e-posta mesajlar\u0131n\u0131n SPF, DKIM ve DMARC gibi kimlik do\u011frulama protokollerine uymas\u0131n\u0131 sa\u011flar. DNS kay\u0131tlar\u0131n\u0131 y\u00f6netmeye, gerekli altyap\u0131y\u0131 sa\u011flamaya ve e-postalar\u0131n spam olarak i\u015faretlenmemesini sa\u011flayarak genel e-posta g\u00fcvenli\u011fini art\u0131rmaya yard\u0131mc\u0131 olurlar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. SPF kimlik do\u011frulamas\u0131 kimlik av\u0131 sald\u0131r\u0131lar\u0131n\u0131 \u00f6nlemeye nas\u0131l yard\u0131mc\u0131 olabilir?<\/h3>\n\n\n\n<p>SPF kimlik do\u011frulamas\u0131, gelen e-posta mesajlar\u0131n\u0131n yetkili IP adreslerinden g\u00f6nderildi\u011fini do\u011frulayarak kimlik av\u0131 sald\u0131r\u0131lar\u0131n\u0131 \u00f6nlemeye yard\u0131mc\u0131 olur. E-posta yetkisiz bir kaynaktan geliyorsa, reddedilir veya \u015f\u00fcpheli olarak i\u015faretlenir, b\u00f6ylece al\u0131c\u0131lar olas\u0131 kimlik av\u0131 giri\u015fimlerinden korunur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">9. DNS TXT kay\u0131tlar\u0131 nelerdir ve e-posta kimlik do\u011frulamas\u0131nda nas\u0131l kullan\u0131l\u0131rlar?<\/h3>\n\n\n\n<p>DNS TXT kay\u0131tlar\u0131, SPF, DKIM ve DMARC yap\u0131land\u0131rmalar\u0131 dahil olmak \u00fczere \u00e7e\u015fitli veri t\u00fcrlerini depolayan DNS sistemindeki metin tabanl\u0131 kay\u0131tlard\u0131r. Bu kay\u0131tlar, e-posta kimlik do\u011frulamas\u0131nda, hangi sunucular\u0131n bir alan ad\u0131 ad\u0131na e-posta g\u00f6ndermesine izin verildi\u011fini belirtmek ve e-posta iletilerinin b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc ve ger\u00e7ekli\u011fini do\u011frulamak i\u00e7in kullan\u0131l\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">10. E-posta iletileri neden spam klas\u00f6r\u00fcne d\u00fc\u015febilir ve SPF, DKIM ve DMARC bunu nas\u0131l engelleyebilir?<\/h3>\n\n\n\n<p>E-posta iletileri, kimlik do\u011frulama kontrollerinde ba\u015far\u0131s\u0131z olursa, yetkisiz IP adreslerinden g\u00f6nderilirse veya \u015f\u00fcpheli i\u00e7erik i\u00e7eriyorsa spam klas\u00f6r\u00fcne d\u00fc\u015febilir. SPF, DKIM ve DMARC protokollerini uygulamak, e-posta iletilerinin do\u011frulanmas\u0131n\u0131 ve me\u015fru kaynaklardan gelmesini sa\u011flayarak spam olarak i\u015faretlenme olas\u0131l\u0131\u011f\u0131n\u0131 azalt\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>E-posta kimlik do\u011frulama; SPF, DKIM ve DMARC \u00fczerine kuruludur. Bu teknik ve temel terimler e-posta kimlik do\u011frulamas\u0131nda ustala\u015fman\u0131za ve marka itibar\u0131n\u0131z\u0131 koruman\u0131za yard\u0131mc\u0131 olur. Kimlik do\u011frulama, &#8220;bir \u015feyin do\u011fru, ger\u00e7ek veya ge\u00e7erli oldu\u011funu kan\u0131tlama veya g\u00f6sterme s\u00fcreci veya eylemi&#8221; olarak tan\u0131mlan\u0131r. E-posta kimlik do\u011frulamas\u0131ndan bahsedildi\u011finde, SPF, DKIM ve DMARC&#8216;den bahsediliyor demektir. Bu ara\u00e7lar, bir e-posta [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4799,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87],"tags":[],"class_list":["post-4789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-e-mail-e-posta"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SPF, DKIM, DMARC: E-Posta G\u00fcvenli\u011finiz ve Alan Ad\u0131n\u0131z i\u00e7in Neden \u00d6nemlidir? - Uzman Posta<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uzmanposta.com\/blog\/spf-dkim-dmarc\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SPF, DKIM, DMARC: E-Posta G\u00fcvenli\u011finiz ve Alan Ad\u0131n\u0131z i\u00e7in Neden \u00d6nemlidir? - Uzman Posta\" \/>\n<meta property=\"og:description\" content=\"E-posta kimlik do\u011frulama; SPF, DKIM ve DMARC \u00fczerine kuruludur. Bu teknik ve temel terimler e-posta kimlik do\u011frulamas\u0131nda ustala\u015fman\u0131za ve marka itibar\u0131n\u0131z\u0131 koruman\u0131za yard\u0131mc\u0131 olur. Kimlik do\u011frulama, &#8220;bir \u015feyin do\u011fru, ger\u00e7ek veya ge\u00e7erli oldu\u011funu kan\u0131tlama veya g\u00f6sterme s\u00fcreci veya eylemi&#8221; olarak tan\u0131mlan\u0131r. E-posta kimlik do\u011frulamas\u0131ndan bahsedildi\u011finde, SPF, DKIM ve DMARC&#8216;den bahsediliyor demektir. Bu ara\u00e7lar, bir e-posta [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/uzmanposta.com\/blog\/spf-dkim-dmarc\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/uzmanposta\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-01T06:39:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-01T23:24:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2024\/08\/spf-dkim-dmarc-eposta-guvenliginiz-ve-alan-adiniz-icin-neden-onemlidir.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sibel Ho\u015f\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@uZmanPosta\" \/>\n<meta name=\"twitter:site\" content=\"@uZmanPosta\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sibel Ho\u015f\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 dakika\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"SPF, DKIM, DMARC: E-Posta G\u00fcvenli\u011finiz ve Alan Ad\u0131n\u0131z i\u00e7in Neden \u00d6nemlidir? - Uzman Posta","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/uzmanposta.com\/blog\/spf-dkim-dmarc\/","og_locale":"tr_TR","og_type":"article","og_title":"SPF, DKIM, DMARC: E-Posta G\u00fcvenli\u011finiz ve Alan Ad\u0131n\u0131z i\u00e7in Neden \u00d6nemlidir? - Uzman Posta","og_description":"E-posta kimlik do\u011frulama; SPF, DKIM ve DMARC \u00fczerine kuruludur. Bu teknik ve temel terimler e-posta kimlik do\u011frulamas\u0131nda ustala\u015fman\u0131za ve marka itibar\u0131n\u0131z\u0131 koruman\u0131za yard\u0131mc\u0131 olur. Kimlik do\u011frulama, &#8220;bir \u015feyin do\u011fru, ger\u00e7ek veya ge\u00e7erli oldu\u011funu kan\u0131tlama veya g\u00f6sterme s\u00fcreci veya eylemi&#8221; olarak tan\u0131mlan\u0131r. E-posta kimlik do\u011frulamas\u0131ndan bahsedildi\u011finde, SPF, DKIM ve DMARC&#8216;den bahsediliyor demektir. 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