{"id":18675,"date":"2025-04-20T09:15:15","date_gmt":"2025-04-20T06:15:15","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/spf-dkim-ve-dmarc-e-postalarinizin-guvenligini-artirin\/"},"modified":"2025-04-20T09:15:15","modified_gmt":"2025-04-20T06:15:15","slug":"spf-dkim-ve-dmarc-e-postalarinizin-guvenligini-artirin","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/spf-dkim-ve-dmarc-e-postalarinizin-guvenligini-artirin\/","title":{"rendered":"SPF, DKIM ve DMARC: E-postalar\u0131n\u0131z\u0131n G\u00fcvenli\u011fini Art\u0131r\u0131n"},"content":{"rendered":"

<\/p>\n

SPF, DKIM ve DMARC: E-postalar\u0131n\u0131z\u0131n G\u00fcvenli\u011fini Art\u0131r\u0131n<\/p>\n

G\u00fcn\u00fcm\u00fcz dijital d\u00fcnyas\u0131nda, e-posta ileti\u015fimi i\u015fletmeler ve bireyler i\u00e7in olmazsa olmazd\u0131r. Ancak, artan sahte e-posta (phishing) sald\u0131r\u0131lar\u0131 nedeniyle e-posta g\u00fcvenli\u011fi b\u00fcy\u00fck \u00f6nem ta\u015f\u0131maktad\u0131r. Bu noktada SPF, DKIM ve DMARC kay\u0131tlar\u0131 devreye girer. Bu \u00fc\u00e7l\u00fc, e-postalar\u0131n\u0131z\u0131n ger\u00e7ek g\u00f6ndericiden geldi\u011finin do\u011frulamas\u0131n\u0131 sa\u011flar ve sahtekarl\u0131\u011f\u0131 engeller. \u00d6zetle, bu teknolojiler e-postan\u0131z\u0131n g\u00fcvenilirli\u011fini \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131r\u0131r.<\/p>\n

SPF (Sender Policy Framework): G\u00f6nderici Politikas\u0131 \u00c7er\u00e7evesi<\/h2>\n

SPF, bir g\u00f6ndericinin e-postalar\u0131n\u0131 g\u00f6nderme yetkisine sahip sunucular\u0131 tan\u0131mlar. Ba\u015fka bir deyi\u015fle, bir alan ad\u0131n\u0131n yetkili g\u00f6nderici sunucular\u0131n\u0131 belirtir. Bu, sahtekarlar\u0131n sahte e-postalar g\u00f6ndermesini \u00f6nlemeye yard\u0131mc\u0131 olur. SPF kayd\u0131n\u0131z\u0131 DNS sunucunuza ekleyerek, e-posta istemcileri g\u00f6nderenin yetkisini do\u011frulayabilir ve sahte e-postalar\u0131 tespit edebilir. \u00d6rne\u011fin, fatihsoysal.com alan ad\u0131n\u0131z i\u00e7in bir SPF kayd\u0131 \u015fu \u015fekilde olabilir:<\/p>\n

v=spf1 mx include:spf.google.com -all<\/code><\/pre>\n
Bu kay\u0131t, fatihsoysal.com alan ad\u0131n\u0131n e-postalar\u0131n\u0131 g\u00f6nderme yetkisine sahip sunucular\u0131n mail sunucular\u0131 (mx) ve Google’\u0131n SPF kay\u0131tlar\u0131n\u0131 i\u00e7erdi\u011fini belirtir. -all ise yetkisiz sunuculardan gelen e-postalar\u0131n reddedilmesi anlam\u0131na gelir.  \u00d6nemli Not:<\/b> SPF kayd\u0131n\u0131z\u0131n do\u011fru \u015fekilde yap\u0131land\u0131r\u0131lmas\u0131 ve d\u00fczenli olarak g\u00fcncellenmesi b\u00fcy\u00fck \u00f6nem ta\u015f\u0131r.  Yanl\u0131\u015f bir yap\u0131land\u0131rma,  me\u015fru e-postalar\u0131n\u0131z\u0131n spam olarak i\u015faretlenmesine neden olabilir.<\/p>\n
DKIM (DomainKeys Identified Mail): Alan Ad\u0131 Anahtar\u0131 ile Kimlik Do\u011frulama<\/h2>\n
DKIM,  e-postalar\u0131n\u0131z\u0131n g\u00f6nderiminden sonra de\u011fi\u015ftirilmedi\u011finin do\u011frulanmas\u0131n\u0131 sa\u011flar.  Bu,  e-postalar\u0131n\u0131z\u0131n i\u00e7eriklerinin g\u00f6nderim sonras\u0131 de\u011fi\u015ftirilmedi\u011finden emin olman\u0131za yard\u0131mc\u0131 olur.  DKIM,  bir dijital imza kullanarak e-postalar\u0131n\u0131z\u0131 imzalar.  Al\u0131c\u0131 sunucular\u0131,  bu imzay\u0131 do\u011frulayarak e-postan\u0131n orijinalli\u011fini ve b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc teyit eder.  SPF ile birlikte kullan\u0131ld\u0131\u011f\u0131nda,  e-posta g\u00fcvenli\u011finizi daha da g\u00fc\u00e7lendirir.  DKIM kurulumu i\u00e7in DNS kay\u0131tlar\u0131n\u0131za \u00f6zel bir DKIM se\u00e7ene\u011fi eklemeniz gerekecektir.  Bu i\u015flem,  hosting sa\u011flay\u0131c\u0131n\u0131z taraf\u0131ndan sa\u011flanan talimatlar\u0131 izleyerek ger\u00e7ekle\u015ftirilebilir.<\/p>\n
DMARC (Domain-based Message Authentication, Reporting & Conformance): Alan Ad\u0131 Tabanl\u0131 Mesaj Kimlik Do\u011frulama, Raporlama ve Uyumluluk<\/h2>\n
DMARC,  SPF ve DKIM’in bir ad\u0131m \u00f6tesine ge\u00e7er.  SPF ve DKIM politikalar\u0131n\u0131 birle\u015ftirir ve e-posta al\u0131c\u0131lar\u0131na nas\u0131l davranmalar\u0131 gerekti\u011fi konusunda talimatlar verir.  DMARC,  kimlik do\u011frulamas\u0131ndan ge\u00e7en ve ge\u00e7meyen e-postalar hakk\u0131nda raporlar sa\u011flar.  Bu raporlar sayesinde sahtekarl\u0131\u011f\u0131 tespit edebilir ve \u00f6nleyici tedbirler alabilirsiniz.  DMARC politikalar\u0131n\u0131z\u0131 ayarlayarak,  sahte e-postalar\u0131 reddedebilir,  quarantine edebilir veya tespit edebilirsiniz.  DMARC ile e-posta g\u00fcvenli\u011finizi \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131rabilir ve sahte e-postalara kar\u015f\u0131 daha etkili bir koruma sa\u011flayabilirsiniz.  fatihsoysal.com<\/a> gibi kendi siteniz i\u00e7in DMARC politikas\u0131 kurulumunu mutlaka g\u00f6z \u00f6n\u00fcnde bulundurmal\u0131s\u0131n\u0131z.<\/p>\n
SPF, DKIM ve DMARC’\u0131n Birlikte \u00c7al\u0131\u015fmas\u0131<\/h2>\n
SPF, DKIM ve DMARC birlikte \u00e7al\u0131\u015farak g\u00fc\u00e7l\u00fc bir e-posta g\u00fcvenlik katman\u0131 olu\u015fturur.  SPF, g\u00f6ndericinin yetkisini do\u011frular. DKIM, e-postan\u0131n i\u00e7erik b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc korur.  DMARC ise bu iki mekanizman\u0131n sonu\u00e7lar\u0131n\u0131 birle\u015ftirir ve al\u0131c\u0131lara e-postalarla ilgili net bir politika belirler. Bu \u00fc\u00e7\u00fcn\u00fcn uyumlu \u00e7al\u0131\u015fmas\u0131, e-posta sahtekarl\u0131\u011f\u0131 riskini en aza indirir ve e-posta g\u00fcvenli\u011fini en \u00fcst d\u00fczeye \u00e7\u0131kar\u0131r.  Bu \u015fekilde,  hem marka itibar\u0131n\u0131z hem de kullan\u0131c\u0131lar\u0131n\u0131z korunmu\u015f olur.<\/p>\n
Sonu\u00e7 olarak,  SPF, DKIM ve DMARC kay\u0131tlar\u0131n\u0131 kurmak ve d\u00fczenli olarak g\u00fcncellemek,  e-postalar\u0131n\u0131z\u0131n g\u00fcvenli\u011fini sa\u011flaman\u0131n \u00f6nemli bir ad\u0131m\u0131d\u0131r.  Bu teknolojileri kullanarak,  sahtekarl\u0131\u011f\u0131 \u00f6nleyebilir,  markan\u0131z\u0131n itibar\u0131n\u0131 koruyabilir ve kullan\u0131c\u0131lar\u0131n\u0131z\u0131 doland\u0131r\u0131c\u0131l\u0131ktan koruyabilirsiniz.  Daha fazla bilgi i\u00e7in bu \u0130ngilizce makaleye<\/a> g\u00f6z atabilirsiniz.<\/p>\n
#Etiketler: SPF, DKIM, DMARC, e-posta g\u00fcvenli\u011fi, kimlik do\u011frulama, sahtekarl\u0131k \u00f6nleme, e-posta do\u011frulama, email security, authentication<\/p>\n
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Bu \u00fc\u00e7l\u00fc, e-postalar\u0131n\u0131z\u0131n ger\u00e7ek g\u00f6ndericiden geldi\u011finin do\u011frulamas\u0131n\u0131 sa\u011flar ve sahtekarl\u0131\u011f\u0131 engeller. \u00d6zetle, bu teknolojiler e-postan\u0131z\u0131n g\u00fcvenilirli\u011fini \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131r\u0131r.","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:\/\/fatihsoysal.com\/blog\/spf-dkim-ve-dmarc-e-postalarinizin-guvenligini-artirin\/","og_locale":"tr_TR","og_type":"article","og_title":"SPF, DKIM ve DMARC: E-postalar\u0131n\u0131z\u0131n G\u00fcvenli\u011fini Art\u0131r\u0131n","og_description":"G\u00fcn\u00fcm\u00fcz dijital d\u00fcnyas\u0131nda, e-posta ileti\u015fimi i\u015fletmeler ve bireyler i\u00e7in olmazsa olmazd\u0131r. 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