Kurumsal<\/a> bir markan\u0131n itibar\u0131 art\u0131k yaln\u0131zca web sitesiyle de\u011fil, g\u00f6nderdi\u011fi her e-posta ile \u00f6l\u00e7\u00fcl\u00fcyor. Teklif maili, fatura, b\u00fclten ya da destek yan\u0131t\u0131\u2026 Bunlar\u0131n spam klas\u00f6r\u00fcne d\u00fc\u015fmesi hem sat\u0131\u015f kayb\u0131na hem de profesyonel g\u00f6r\u00fcn\u00fcm\u00fcn\u00fcz\u00fcn zedelenmesine neden oluyor. \u0130\u015fte tam bu noktada SPF, DKIM ve DMARC<\/strong> kay\u0131tlar\u0131 devreye giriyor. Bu \u00fc\u00e7l\u00fc, alan ad\u0131n\u0131z\u0131 (domaininizi) kullanarak sahte e-posta g\u00f6nderilmesini zorla\u015ft\u0131r\u0131r, ger\u00e7ek maillerinizin de al\u0131c\u0131lar\u0131n gelen kutusuna g\u00fcvenle ula\u015fmas\u0131na yard\u0131mc\u0131 olur.<\/p>\n MarkaHost olarak kurumsal e-posta altyap\u0131lar\u0131n\u0131 kurgularken, sadece bir mail<\/a> hesab\u0131 a\u00e7makla yetinmiyoruz; DNS taraf\u0131ndaki bu kritik kay\u0131tlar\u0131 da mutlaka masaya yat\u0131r\u0131yoruz. Bu yaz\u0131da, teknik terimlere bo\u011fulmadan SPF, DKIM ve DMARC nedir<\/strong>, nas\u0131l \u00e7al\u0131\u015f\u0131rlar ve pratik olarak kurumsal e-posta teslim edilebilirli\u011fini nas\u0131l art\u0131rabilirsiniz<\/strong> ad\u0131m ad\u0131m anlataca\u011f\u0131z.<\/p>\n G\u00fcn\u00fcm\u00fczde spam ve kimlik av\u0131 (phishing) sald\u0131r\u0131lar\u0131 o kadar artt\u0131 ki, Gmail, Outlook ve di\u011fer servisler \u00e7ok agresif filtreler kullan\u0131yor. Bu filtreler, yaln\u0131zca e-posta i\u00e7eri\u011fine de\u011fil; g\u00f6nderen IP adresine, alan ad\u0131n\u0131z\u0131n itibar\u0131na, DNS kay\u0131tlar\u0131n\u0131za ve hatta \u00f6nceki g\u00f6nderim ge\u00e7mi\u015finize bak\u0131yor.<\/p>\n Bu noktada, alan ad\u0131n\u0131z\u0131n DNS taraf\u0131n\u0131n do\u011fru yap\u0131land\u0131r\u0131lmas\u0131 kritik hale geliyor. E\u011fer DNS taraf\u0131nda hangi kay\u0131tlar\u0131n ne i\u015fe yarad\u0131\u011f\u0131n\u0131 daha iyi anlamak istiyorsan\u0131z, DNS kay\u0131t t\u00fcrleri ve do\u011fru DNS ayarlar\u0131 rehberimize<\/a> mutlaka g\u00f6z at\u0131n. Alan ad\u0131n\u0131z\u0131 yeni ald\u0131ysan\u0131z veya nameserver de\u011fi\u015ftirdiyseniz, nameserver nedir ve nas\u0131l de\u011fi\u015ftirilir<\/a> yaz\u0131m\u0131z da i\u015finizi kolayla\u015ft\u0131racakt\u0131r.<\/p>\n SPF (Sender Policy Framework)<\/strong>, k\u0131saca \u201cBu alan ad\u0131<\/a> ad\u0131na e-posta g\u00f6ndermeye hangi sunucular yetkilidir?\u201d sorusunun cevab\u0131n\u0131 veren bir DNS kayd\u0131d\u0131r. Alan ad\u0131n\u0131z\u0131n DNS\u2019ine ekledi\u011finiz bir TXT kayd\u0131<\/strong> ile mail g\u00f6nderebilecek IP adreslerini veya sunucular\u0131 tan\u0131mlars\u0131n\u0131z.<\/p>\n \u00d6rne\u011fin:<\/p>\n Bu kay\u0131t, belirtti\u011finiz IP adresi ve sunucular d\u0131\u015f\u0131nda gelen mailleri yetkisiz olarak i\u015faretler. B\u00f6ylece sald\u0131rganlar sizin alan ad\u0131n\u0131z\u0131 taklit ederek mail g\u00f6ndermeye \u00e7al\u0131\u015ft\u0131\u011f\u0131nda, al\u0131c\u0131 sunucu bu mailleri b\u00fcy\u00fck ihtimalle reddeder veya spam\u2019e atar.<\/p>\n DKIM (DomainKeys Identified Mail)<\/strong>, g\u00f6nderdi\u011finiz her e-postan\u0131n ba\u015fl\u0131k ve g\u00f6vdesine, alan ad\u0131n\u0131za ba\u011fl\u0131 bir dijital imza<\/strong> ekler. Bu imza, maili g\u00f6nderen sunucu taraf\u0131ndan \u00f6zel anahtar ile olu\u015fturulur; al\u0131c\u0131 sunucu da DNS\u2019teki DKIM kayd\u0131nda yay\u0131nlad\u0131\u011f\u0131n\u0131z a\u00e7\u0131k anahtar<\/strong> ile bu imzay\u0131 do\u011frular.<\/p>\n B\u00f6ylece al\u0131c\u0131 taraf \u015funlardan emin olur:<\/p>\n DKIM kayd\u0131 da bir TXT kayd\u0131<\/strong>d\u0131r ancak SPF\u2019den farkl\u0131 olarak bir selector<\/em> kullan\u0131r (\u00f6rne\u011fin DMARC (Domain-based Message Authentication, Reporting & Conformance)<\/strong>, SPF ve DKIM sonu\u00e7lar\u0131na bakarak, al\u0131c\u0131 sunuculara \u201cBu testlerden kalan maillerle ne yapmal\u0131s\u0131n?\u201d diyen politikad\u0131r. Yani:<\/p>\n Tipik bir DMARC kayd\u0131 \u015f\u00f6yle g\u00f6r\u00fcn\u00fcr:<\/p>\n Buradaki DMARC ile ilgili daha teknik detaylar okumak isterseniz, SPF, DKIM ve DMARC ile e-posta g\u00fcvenli\u011fi<\/a> ba\u015fl\u0131kl\u0131 rehberimizi inceleyebilirsiniz.<\/p>\n \u0130lk ad\u0131m, alan ad\u0131n\u0131z\u0131n ger\u00e7ekten size ait oldu\u011funu ve yetkili sunucular taraf\u0131ndan kullan\u0131ld\u0131\u011f\u0131n\u0131 ispatlamak. Bunun i\u00e7in:<\/p>\n \u201cSMTP nedir, nas\u0131l \u00e7al\u0131\u015f\u0131r?\u201d sorusu akl\u0131n\u0131za tak\u0131l\u0131yorsa, SMTP nedir rehberimiz<\/a> protokol taraf\u0131n\u0131 daha iyi anlaman\u0131za yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n info@, destek@, satis@ gibi adresler h\u00e2l\u00e2 \u00e7ok yayg\u0131n kullan\u0131l\u0131yor ancak as\u0131l \u00f6nemli olan, alan ad\u0131n\u0131z ile uyumlu kurumsal mail<\/strong> kullanman\u0131z. @gmail, @outlook gibi \u00fccretsiz uzant\u0131lar yerine markan\u0131za ait alan ad\u0131 kulland\u0131\u011f\u0131n\u0131zda hem g\u00fcven hem de teslim edilebilirlik artar.<\/p>\n \u201cKurumsal mail ne i\u015fe yarar, tam olarak nas\u0131l kullanmal\u0131y\u0131m?\u201d diyorsan\u0131z, kurumsal mail nedir<\/a> yaz\u0131m\u0131z size genel bir \u00e7er\u00e7eve sunar. Hen\u00fcz alan ad\u0131n\u0131z ve mail altyap\u0131n\u0131z yoksa, kurumsal e-posta adresi almak i\u00e7in haz\u0131rlad\u0131\u011f\u0131m\u0131z rehber<\/a> ad\u0131m ad\u0131m yol g\u00f6sterecektir.<\/p>\n Teknik ayarlar\u0131 m\u00fckemmel yapsan\u0131z bile, yanl\u0131\u015f hedef kitleye mail g\u00f6nderiyorsan\u0131z spam filtrelerini tetiklersiniz. Bu nedenle:<\/p>\n DMARC\u2019\u0131n en b\u00fcy\u00fck avantajlar\u0131ndan biri, alan ad\u0131n\u0131z\u0131 taklit ederek kimlik av\u0131 sald\u0131r\u0131s\u0131 yapmaya \u00e7al\u0131\u015fanlar\u0131 g\u00f6rebilmenizdir. rua<\/strong> alan\u0131na yazd\u0131\u011f\u0131n\u0131z e-posta adresine, hangi IP\u2019lerin sizin ad\u0131n\u0131za mail g\u00f6nderdi\u011fini g\u00f6steren raporlar gelir. Burada tan\u0131mad\u0131\u011f\u0131n\u0131z bir IP g\u00f6r\u00fcyorsan\u0131z, b\u00fcy\u00fck ihtimalle domain spoofing<\/strong> giri\u015fimi ile kar\u015f\u0131 kar\u015f\u0131yas\u0131n\u0131zd\u0131r. Bu konuda detayl\u0131 bilgi i\u00e7in domain spoofing nedir ve nas\u0131l \u00f6nlenir<\/a> yaz\u0131m\u0131za da g\u00f6z atabilirsiniz.<\/p>\n Zaman i\u00e7inde t\u00fcm me\u015fru g\u00f6nderim kaynaklar\u0131n\u0131z\u0131n SPF ve DKIM testlerinden sorunsuz ge\u00e7ti\u011fini g\u00f6rd\u00fc\u011f\u00fcn\u00fczde, DMARC politikan\u0131z\u0131 kademeli olarak p=quarantine<\/strong> ve ard\u0131ndan p=reject<\/strong> seviyesine \u00e7ekebilirsiniz.<\/p>\n \u00d6zellikle y\u00fcksek hacimli mail g\u00f6nderimi yap\u0131yorsan\u0131z (e-ticaret<\/a>, SaaS, b\u00fcltenler vb.), payla\u015f\u0131ml\u0131 hosting<\/a> yerine \u00f6zel kaynaklara sahip bir VPS<\/a><\/strong> veya dedicated sunucu<\/strong> tercih etmek, IP itibar\u0131n\u0131z\u0131 daha iyi y\u00f6netmenizi sa\u011flar. Hangi altyap\u0131n\u0131n size daha uygun oldu\u011funa karar veremiyorsan\u0131z, dedicated sunucu mu, VPS mi, cloud hosting mi<\/a> yaz\u0131m\u0131z karar s\u00fcrecinizi h\u0131zland\u0131racakt\u0131r.<\/p>\n MarkaHost olarak, ister payla\u015f\u0131ml\u0131 hosting, ister VPS ya da dedicated sunucu kullan\u0131n, SPF, DKIM ve DMARC kay\u0131tlar\u0131n\u0131n olu\u015fturulmas\u0131 ve yorumlanmas\u0131 konusunda m\u00fc\u015fterilerimize pratik destek sunuyoruz. B\u00f6ylece hem g\u00fc\u00e7l\u00fc bir sunucu altyap\u0131s\u0131na sahip oluyor, hem de g\u00f6nderece\u011finiz maillerin m\u00fcmk\u00fcn olan en y\u00fcksek oranda gelen kutusuna d\u00fc\u015fmesini<\/strong> sa\u011fl\u0131yoruz.<\/p>\n Kurumsal e-posta g\u00f6nderiminde y\u00fcksek teslim edilebilirlik art\u0131k bir l\u00fcks de\u011fil, temel bir gereklilik. Marka itibar\u0131n\u0131z\u0131 korumak, sahte e-posta sald\u0131r\u0131lar\u0131n\u0131 engellemek ve sat\u0131\u015f s\u00fcre\u00e7lerinizi kesintisiz s\u00fcrd\u00fcrebilmek i\u00e7in SPF, DKIM ve DMARC<\/strong> \u00fc\u00e7l\u00fcs\u00fcn\u00fc bir standart haline getirmeniz gerekiyor.<\/p>\n Alan ad\u0131n\u0131z\u0131n DNS kay\u0131tlar\u0131n\u0131 d\u00fczenleyerek ba\u015flay\u0131n, mail sunucunuzda DKIM imzas\u0131n\u0131 aktif edin, ard\u0131ndan DMARC ile politikalar\u0131n\u0131z\u0131 tan\u0131mlay\u0131n. G\u00f6nderim listelerinizi temiz tutup, i\u00e7erik taraf\u0131nda da dikkatli davrand\u0131\u011f\u0131n\u0131zda, spam klas\u00f6r\u00fcne d\u00fc\u015fen maillerin belirgin \u015fekilde azald\u0131\u011f\u0131n\u0131 g\u00f6receksiniz. E-posta altyap\u0131s\u0131n\u0131n temelini daha iyi kavramak isterseniz, e-posta nedir ve nas\u0131l \u00e7al\u0131\u015f\u0131r<\/a> yaz\u0131m\u0131z da size yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n E\u011fer alan ad\u0131n\u0131z ve hosting hizmetiniz MarkaHost\u2019ta ise, kontrol paneliniz \u00fczerinden SPF ve DKIM kay\u0131tlar\u0131n\u0131 ekleme a\u015famas\u0131nda tak\u0131ld\u0131\u011f\u0131n\u0131z her noktada destek ekibimize ula\u015fabilirsiniz. Yeni bir alan ad\u0131 ve g\u00fc\u00e7l\u00fc bir sunucu altyap\u0131s\u0131na ihtiyac\u0131n\u0131z varsa, MarkaHost\u2019un domain, hosting, VPS ve dedicated sunucu \u00e7\u00f6z\u00fcmleriyle hem web sitenizi hem de kurumsal e-posta altyap\u0131n\u0131z\u0131 g\u00fcvenle b\u00fcy\u00fctebilirsiniz.<\/p>\n","protected":false},"excerpt":{"rendered":" SPF, DKIM ve DMARC ile Kurumsal E-Posta Teslim Edilebilirli\u011fi Kurumsal bir markan\u0131n itibar\u0131 art\u0131k yaln\u0131zca web sitesiyle de\u011fil, g\u00f6nderdi\u011fi her<\/p>\n","protected":false},"author":1,"featured_media":2032,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"footnotes":""},"categories":[20],"tags":[],"class_list":["post-2016","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji"],"_links":{"self":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts\/2016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=2016"}],"version-history":[{"count":0,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/posts\/2016\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/media\/2032"}],"wp:attachment":[{"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=2016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=2016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/markahost.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=2016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}E-Posta Teslim Edilebilirli\u011fi Neden Bu Kadar Zorla\u015ft\u0131?<\/h2>\n
SPF Nedir? Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n
v=spf1 ip4:1.2.3.4 include:mail.ornek.com -all<\/code><\/p>\nSPF Kayd\u0131 Olu\u015ftururken Dikkat Edilmesi Gerekenler<\/h3>\n
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DKIM Nedir? Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n
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default._domainkey.ornek.com<\/code>). \u00c7o\u011fu zaman DKIM anahtar\u0131n\u0131 e-posta sunucunuz (\u00f6rn. cPanel<\/a>, Plesk veya ayr\u0131 bir mail sunucusu) otomatik \u00fcretir, siz sadece DNS taraf\u0131na eklemeniz gereken uzun anahtar de\u011ferini kopyalars\u0131n\u0131z.<\/p>\nDMARC Nedir? SPF ve DKIM\u2019i Nas\u0131l Birle\u015ftirir?<\/h2>\n
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v=DMARC1; p=quarantine; rua=mailto:dmarc-rapor@ornek.com; pct=100<\/code><\/p>\np<\/code> parametresi politikan\u0131z\u0131 ifade eder:<\/p>\n\n
Ad\u0131m Ad\u0131m Kurumsal E-Posta Teslim Edilebilirli\u011fi Nas\u0131l Art\u0131r\u0131l\u0131r?<\/h2>\n
1. Alan Ad\u0131n\u0131z ve DNS Kay\u0131tlar\u0131n\u0131z\u0131 D\u00fczenleyin<\/h3>\n
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2. Do\u011fru Kurumsal Mail Adresleri Kullan\u0131n<\/h3>\n
3. G\u00f6nderim Listelerinizi Temiz Tutun<\/h3>\n
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4. G\u00fcvenlik ve Marka Korumas\u0131 \u0130\u00e7in DMARC Raporlar\u0131n\u0131 \u0130zleyin<\/h3>\n
5. Do\u011fru Sunucu Altyap\u0131s\u0131n\u0131 Tercih Edin<\/h3>\n
Sonu\u00e7: SPF + DKIM + DMARC \u00dc\u00e7l\u00fcs\u00fcn\u00fc Standart Haline Getirin<\/h2>\n