{"id":4175,"date":"2026-01-04T22:09:19","date_gmt":"2026-01-04T19:09:19","guid":{"rendered":"https:\/\/www.dchost.com\/blog\/sadece-e-posta-icin-hosting-mimarisi-web-sitesi-olmadan-kurumsal-mail-kurmak\/"},"modified":"2026-01-04T22:09:19","modified_gmt":"2026-01-04T19:09:19","slug":"sadece-e-posta-icin-hosting-mimarisi-web-sitesi-olmadan-kurumsal-mail-kurmak","status":"publish","type":"post","link":"https:\/\/www.dchost.com\/blog\/sadece-e-posta-icin-hosting-mimarisi-web-sitesi-olmadan-kurumsal-mail-kurmak\/","title":{"rendered":"Sadece E\u2011Posta \u0130\u00e7in Hosting Mimarisi: Web Sitesi Olmadan Kurumsal Mail Kurmak"},"content":{"rendered":"<div class=\"dchost-blog-content-wrapper\"><div id=\"toc_container\" class=\"toc_transparent no_bullets\"><p class=\"toc_title\">\u0130&ccedil;indekiler<\/p><ul class=\"toc_list\"><li><a href=\"#Sadece_EPosta_Icin_Hosting_Neden_Gundeme_Geliyor\"><span class=\"toc_number toc_depth_1\">1<\/span> Sadece E\u2011Posta \u0130\u00e7in Hosting Neden G\u00fcndeme Geliyor?<\/a><\/li><li><a href=\"#Sadece_EPosta_Icin_Hosting_Secenekleri\"><span class=\"toc_number toc_depth_1\">2<\/span> Sadece E\u2011Posta \u0130\u00e7in Hosting Se\u00e7enekleri<\/a><ul><li><a href=\"#1_Paylasimli_EPosta_Hosting_Web_Sitesiz_Kullanim\"><span class=\"toc_number toc_depth_2\">2.1<\/span> 1) Payla\u015f\u0131ml\u0131 E\u2011Posta Hosting (Web Sitesiz Kullan\u0131m)<\/a><\/li><li><a href=\"#2_DCHost_VPSDedicated_Uzerinde_Kendi_Mail_Sunucunuzu_Kurmak\"><span class=\"toc_number toc_depth_2\">2.2<\/span> 2) DCHost VPS\/Dedicated \u00dczerinde Kendi Mail Sunucunuzu Kurmak<\/a><\/li><li><a href=\"#3_Harici_Kurumsal_EPosta_Servisi_DCHost_DNS\"><span class=\"toc_number toc_depth_2\">2.3<\/span> 3) Harici Kurumsal E\u2011Posta Servisi + DCHost DNS<\/a><\/li><\/ul><\/li><li><a href=\"#Web_Sitesi_Olmadan_DNS_Tasarimi_Nasil_Yapilir\"><span class=\"toc_number toc_depth_1\">3<\/span> Web Sitesi Olmadan DNS Tasar\u0131m\u0131 Nas\u0131l Yap\u0131l\u0131r?<\/a><\/li><li><a href=\"#Sadece_EPosta_Icin_Zorunlu_ve_Onerilen_DNS_Kayitlari\"><span class=\"toc_number toc_depth_1\">4<\/span> Sadece E\u2011Posta \u0130\u00e7in Zorunlu ve \u00d6nerilen DNS Kay\u0131tlar\u0131<\/a><ul><li><a href=\"#1_MX_Kaydi_EPostanin_Gidecegi_Sunucuyu_Belirlemek\"><span class=\"toc_number toc_depth_2\">4.1<\/span> 1) MX Kayd\u0131: E\u2011Postan\u0131n Gidece\u011fi Sunucuyu Belirlemek<\/a><\/li><li><a href=\"#2_AAAAA_Kayitlari_Mail_Sunucusunun_IPsini_Tanimlamak\"><span class=\"toc_number toc_depth_2\">4.2<\/span> 2) A\/AAAA Kay\u0131tlar\u0131: Mail Sunucusunun IP\u2019sini Tan\u0131mlamak<\/a><\/li><li><a href=\"#3_SPF_Kaydi_Hangi_Sunucun_Adiniza_Mail_Gonderebilecegini_Ilan_Etmek\"><span class=\"toc_number toc_depth_2\">4.3<\/span> 3) SPF Kayd\u0131: Hangi Sunucun Ad\u0131n\u0131za Mail G\u00f6nderebilece\u011fini \u0130lan Etmek<\/a><\/li><li><a href=\"#4_DKIM_Kaydi_Icerik_Butunlugunu_Kriptografik_Olarak_Imzalamak\"><span class=\"toc_number toc_depth_2\">4.4<\/span> 4) DKIM Kayd\u0131: \u0130\u00e7erik B\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc Kriptografik Olarak \u0130mzalamak<\/a><\/li><li><a href=\"#5_DMARC_Kaydi_SPF_ve_DKIM_Politikanizi_Ilan_Etmek\"><span class=\"toc_number toc_depth_2\">4.5<\/span> 5) DMARC Kayd\u0131: SPF ve DKIM Politikan\u0131z\u0131 \u0130lan Etmek<\/a><\/li><li><a href=\"#6_PTR_Reverse_DNS_Kaydi_IP_rarr_Alan_Adi_Eslemesi\"><span class=\"toc_number toc_depth_2\">4.6<\/span> 6) PTR (Reverse DNS) Kayd\u0131: IP &rarr; Alan Ad\u0131 E\u015flemesi<\/a><\/li><li><a href=\"#7_MTASTS_ve_TLSRPT_Zorunlu_Sifreleme_Politikasi\"><span class=\"toc_number toc_depth_2\">4.7<\/span> 7) MTA\u2011STS ve TLS\u2011RPT: Zorunlu \u015eifreleme Politikas\u0131<\/a><\/li><\/ul><\/li><li><a href=\"#Guvenlik_ve_Teslim_Edilebilirlik_Perspektifinden_Mimari_Tasarim\"><span class=\"toc_number toc_depth_1\">5<\/span> G\u00fcvenlik ve Teslim Edilebilirlik Perspektifinden Mimari Tasar\u0131m<\/a><ul><li><a href=\"#Paylasimli_IP_mi_Dedicated_IP_mi\"><span class=\"toc_number toc_depth_2\">5.1<\/span> Payla\u015f\u0131ml\u0131 IP mi, Dedicated IP mi?<\/a><\/li><li><a href=\"#Guclu_Kimlik_Dogrulama_ve_Erisim_Kontrolleri\"><span class=\"toc_number toc_depth_2\">5.2<\/span> G\u00fc\u00e7l\u00fc Kimlik Do\u011frulama ve Eri\u015fim Kontrolleri<\/a><\/li><li><a href=\"#Teslim_Edilebilirligi_Izlemek_ve_Iyilestirmek\"><span class=\"toc_number toc_depth_2\">5.3<\/span> Teslim Edilebilirli\u011fi \u0130zlemek ve \u0130yile\u015ftirmek<\/a><\/li><\/ul><\/li><li><a href=\"#Yedeklilik_Bir_Sunucuya_Bagimli_Kalmayan_EPosta_Altyapisi\"><span class=\"toc_number toc_depth_1\">6<\/span> Yedeklilik: Bir Sunucuya Ba\u011f\u0131ml\u0131 Kalmayan E\u2011Posta Altyap\u0131s\u0131<\/a><\/li><li><a href=\"#Yalnizca_EPosta_Icin_Ornek_Mimariler\"><span class=\"toc_number toc_depth_1\">7<\/span> Yaln\u0131zca E\u2011Posta \u0130\u00e7in \u00d6rnek Mimariler<\/a><ul><li><a href=\"#Senaryo_1_10_Kisilik_Muhasebe_Burosu_Paylasimli_EPosta_Hosting\"><span class=\"toc_number toc_depth_2\">7.1<\/span> Senaryo 1: 10 Ki\u015filik Muhasebe B\u00fcrosu \u2013 Payla\u015f\u0131ml\u0131 E\u2011Posta Hosting<\/a><\/li><li><a href=\"#Senaryo_2_70_Kisilik_Dagitik_Ekip_DCHost_VPS_Uzerinde_Kendi_MTA\"><span class=\"toc_number toc_depth_2\">7.2<\/span> Senaryo 2: 70 Ki\u015filik Da\u011f\u0131t\u0131k Ekip \u2013 DCHost VPS \u00dczerinde Kendi MTA<\/a><\/li><li><a href=\"#Senaryo_3_Ajans_Onlarca_Musteri_Alan_Adi_icin_Merkezi_Mail_ve_DNS\"><span class=\"toc_number toc_depth_2\">7.3<\/span> Senaryo 3: Ajans \u2013 Onlarca M\u00fc\u015fteri Alan Ad\u0131 i\u00e7in Merkezi Mail ve DNS<\/a><\/li><\/ul><\/li><li><a href=\"#Yedekleme_Arsiv_ve_Log_Yonetimi\"><span class=\"toc_number toc_depth_1\">8<\/span> Yedekleme, Ar\u015fiv ve Log Y\u00f6netimi<\/a><\/li><li><a href=\"#DCHost_ile_Sadece_EPosta_Altyapisini_Adim_Adim_Kurmak\"><span class=\"toc_number toc_depth_1\">9<\/span> DCHost ile Sadece E\u2011Posta Altyap\u0131s\u0131n\u0131 Ad\u0131m Ad\u0131m Kurmak<\/a><\/li><li><a href=\"#Sonuc_Web_Sitesi_Olmadan_da_Kurumsal_EPosta_Mumkun_Onemli_Olan_Mimari\"><span class=\"toc_number toc_depth_1\">10<\/span> Sonu\u00e7: Web Sitesi Olmadan da Kurumsal E\u2011Posta M\u00fcmk\u00fcn, \u00d6nemli Olan Mimari<\/a><\/li><\/ul><\/div>\n<h2><span id=\"Sadece_EPosta_Icin_Hosting_Neden_Gundeme_Geliyor\">Sadece E\u2011Posta \u0130\u00e7in Hosting Neden G\u00fcndeme Geliyor?<\/span><\/h2>\n<p>Pek \u00e7ok i\u015fletme i\u00e7in ilk ihtiya\u00e7 bir web sitesi de\u011fil, g\u00fcvenilir bir kurumsal e\u2011posta altyap\u0131s\u0131 oluyor. \u00d6zellikle yeni kurulan \u015firketler, saha ekipleri a\u011f\u0131r basan i\u015fletmeler, dan\u0131\u015fmanl\u0131k ofisleri veya sadece pazaryerlerinde sat\u0131\u015f yapan e\u2011ticaret giri\u015fimleri; hen\u00fcz web sitesine b\u00fct\u00e7e ay\u0131rmadan, kendi alan adlar\u0131yla profesyonel e\u2011posta kullanmak istiyor. Kartvizitte <strong>info@marka.com<\/strong> yazs\u0131n, ama <strong>www.marka.com<\/strong> hen\u00fcz yay\u0131nda olmas\u0131n; bu olduk\u00e7a yayg\u0131n bir senaryo.<\/p>\n<p>Burada kritik soru \u015fu: <strong>Web sitesi olmadan sadece e\u2011posta i\u00e7in nas\u0131l bir hosting ve DNS mimarisi kurmal\u0131y\u0131m?<\/strong> Hangi DNS kay\u0131tlar\u0131 zorunlu, hangileri iste\u011fe ba\u011fl\u0131 ama \u00f6nemli? SPF, DKIM, DMARC, MTA\u2011STS ve benzeri g\u00fcvenlik standartlar\u0131n\u0131 web sitesi olmadan da devreye alabilir miyim? Ve t\u00fcm bunlar\u0131 yaparken, e\u2011postalar\u0131m\u0131n spam klas\u00f6r\u00fcne d\u00fc\u015fmesini nas\u0131l \u00f6nlerim?<\/p>\n<p>Bu yaz\u0131da DCHost ekibi olarak, sadece e\u2011posta i\u00e7in temiz, s\u00fcrd\u00fcr\u00fclebilir ve g\u00fcvenli bir mimariyi ad\u0131m ad\u0131m anlataca\u011f\u0131z. Alan ad\u0131n\u0131z\u0131 yeni ald\u0131ysan\u0131z ve bu alan ad\u0131nda yaln\u0131zca e\u2011posta bar\u0131nd\u0131rmak istiyorsan\u0131z, a\u015fa\u011f\u0131daki rehberi uygulayarak hem do\u011fru DNS tasar\u0131m\u0131n\u0131 kurabilir, hem de gelecekte web sitesi eklemek istedi\u011finizde sorunsuzca geni\u015fleyebilecek bir altyap\u0131ya sahip olabilirsiniz.<\/p>\n<h2><span id=\"Sadece_EPosta_Icin_Hosting_Secenekleri\">Sadece E\u2011Posta \u0130\u00e7in Hosting Se\u00e7enekleri<\/span><\/h2>\n<p>\u00d6nce b\u00fcy\u00fck resmi netle\u015ftirelim. Sadece e\u2011posta i\u00e7in \u00fc\u00e7 ana mimari yakla\u015f\u0131m var. Hangisini se\u00e7erseniz se\u00e7in, temel prensip ayn\u0131: Alan ad\u0131n\u0131z\u0131n DNS kay\u0131tlar\u0131, e\u2011posta trafi\u011fini do\u011fru sunucuya y\u00f6nlendirecek; siz de kullan\u0131c\u0131 hesaplar\u0131n\u0131 orada y\u00f6neteceksiniz.<\/p>\n<h3><span id=\"1_Paylasimli_EPosta_Hosting_Web_Sitesiz_Kullanim\">1) Payla\u015f\u0131ml\u0131 E\u2011Posta Hosting (Web Sitesiz Kullan\u0131m)<\/span><\/h3>\n<p>En pratik yakla\u015f\u0131m, payla\u015f\u0131ml\u0131 bir hosting paketini yaln\u0131zca e\u2011posta i\u00e7in kullanmak. Web dizinine hi\u00e7bir site y\u00fcklemeden, sadece mail servislerini aktif tutabilirsiniz. Bu senaryoda:<\/p>\n<ul>\n<li>Alan ad\u0131n\u0131z\u0131n <strong>MX<\/strong> kay\u0131tlar\u0131, DCHost mail sunucular\u0131na y\u00f6nelir.<\/li>\n<li>cPanel veya benzeri panel \u00fczerinden e\u2011posta hesaplar\u0131n\u0131z\u0131 (<strong>isim@alanadi.com<\/strong>) a\u00e7ars\u0131n\u0131z.<\/li>\n<li>IMAP\/POP3 ve SMTP eri\u015fimi haz\u0131r gelir, siz sadece DNS ayarlar\u0131n\u0131 do\u011fru yapmakla u\u011fra\u015f\u0131rs\u0131n\u0131z.<\/li>\n<\/ul>\n<p>\u00d6zellikle 5\u201120 kullan\u0131c\u0131 aras\u0131nda, basit bir mimariyle yola \u00e7\u0131kmak isteyen i\u015fletmeler i\u00e7in bu model idealdir. Web sitesi ihtiyac\u0131 olu\u015ftu\u011funda, ayn\u0131 hesap \u00fczerinde WordPress veya farkl\u0131 bir uygulama kurabilir; DNS taraf\u0131nda b\u00fcy\u00fck de\u011fi\u015fiklik yapman\u0131za gerek kalmadan yolunuza devam edersiniz. Bu yakla\u015f\u0131m\u0131n art\u0131s\u0131, <strong>y\u00f6netimin kolay olmas\u0131<\/strong> ve e\u2011posta + web sitesi i\u00e7in tek panel kullanman\u0131zd\u0131r.<\/p>\n<h3><span id=\"2_DCHost_VPSDedicated_Uzerinde_Kendi_Mail_Sunucunuzu_Kurmak\">2) DCHost <a href=\"https:\/\/www.dchost.com\/tr\/vps\">VPS<\/a>\/Dedicated \u00dczerinde Kendi Mail Sunucunuzu Kurmak<\/span><\/h3>\n<p>Daha ileri d\u00fczey kontrol isteyen, y\u00fcksek hacimli e\u2011posta trafi\u011fi olan veya sekt\u00f6r gere\u011fi log\/tutma politikalar\u0131n\u0131 s\u0131k\u0131 uygulamas\u0131 gereken firmalar i\u00e7in ikinci yol; DCHost \u00fczerinde bir <strong>VPS<\/strong> ya da <strong>dedicated sunucu<\/strong> kiralay\u0131p kendi mail sunucusunu y\u00f6netmektir. Bu senaryoda:<\/p>\n<ul>\n<li>Postfix\/Exim + Dovecot gibi bile\u015fenlerle <strong>kendi MTA ve IMAP\/POP3 sunucunuzu<\/strong> kurars\u0131n\u0131z.<\/li>\n<li>IP \u0131s\u0131nmas\u0131, RBL takibi, greylisting, spam filtresi gibi konularda tam yetki sizde olur.<\/li>\n<li>Yetkili oldu\u011funuz sekt\u00f6rel veya kurumsal gereksinimlere g\u00f6re log saklama, ar\u015fivleme, yedekleme politikalar\u0131n\u0131z\u0131 istedi\u011finiz gibi tasarlars\u0131n\u0131z.<\/li>\n<\/ul>\n<p>Bu mimariyi teknik ekibi olan, 30\u201140+ kullan\u0131c\u0131ya sahip kurumlarda s\u0131k g\u00f6r\u00fcyoruz. E\u011fer bu yolu d\u00fc\u015f\u00fcn\u00fcyorsan\u0131z, DCHost blogdaki <a href='https:\/\/www.dchost.com\/blog\/vpste-e%e2%80%91posta-sunucusu-kurulumu-postfix-dovecot-rspamd-ile-teslim-edilebilirlik-ve-ip-isitma-adim-adim\/'>VPS\u2019te e\u2011posta sunucusu kurulumuna dair detayl\u0131 rehber<\/a> size iyi bir teknik temel sa\u011flayacakt\u0131r.<\/p>\n<h3><span id=\"3_Harici_Kurumsal_EPosta_Servisi_DCHost_DNS\">3) Harici Kurumsal E\u2011Posta Servisi + DCHost DNS<\/span><\/h3>\n<p>\u00dc\u00e7\u00fcnc\u00fc se\u00e7enek, e\u2011postay\u0131 tamamen harici bir kurumsal servis sa\u011flay\u0131c\u0131da bar\u0131nd\u0131r\u0131p, alan ad\u0131n\u0131n DNS y\u00f6netimini DCHost \u00fczerinde tutmak. Bu durumda:<\/p>\n<ul>\n<li>MX kay\u0131tlar\u0131n\u0131z\u0131 harici servisin size verdi\u011fi adreslere y\u00f6nlendirirsiniz.<\/li>\n<li>SPF, DKIM, DMARC gibi TXT kay\u0131tlar\u0131 yine DCHost DNS \u00fczerinde tutulur.<\/li>\n<li>\u0130leride farkl\u0131 bir servise ge\u00e7mek istedi\u011finizde tek yapman\u0131z gereken DNS kay\u0131tlar\u0131n\u0131 g\u00fcncellemektir.<\/li>\n<\/ul>\n<p>Bu yakla\u015f\u0131m, DNS taraf\u0131nda esneklik kazand\u0131r\u0131r. DCHost \u00fczerinde <strong>Premium DNS<\/strong> veya bar\u0131nd\u0131rma hesab\u0131 ile t\u00fcm DNS kay\u0131tlar\u0131n\u0131z\u0131 tek noktadan y\u00f6netebilir, mail sa\u011flay\u0131c\u0131n\u0131z\u0131 de\u011fi\u015ftirdi\u011finizde alan ad\u0131n\u0131 ta\u015f\u0131mak zorunda kalmazs\u0131n\u0131z. E\u2011posta hosting modellerini kar\u015f\u0131la\u015ft\u0131r\u0131rken daha geni\u015f \u00e7er\u00e7eve g\u00f6rmek isterseniz, <a href='https:\/\/www.dchost.com\/blog\/e-posta-hosting-secimi-kendi-sunucunuz-mu-paylasimli-hosting-mi-google-workspace-ve-microsoft-365-mi\/'>e\u2011posta hosting se\u00e7imi rehberimize<\/a> de g\u00f6z atabilirsiniz.<\/p>\n<h2><span id=\"Web_Sitesi_Olmadan_DNS_Tasarimi_Nasil_Yapilir\">Web Sitesi Olmadan DNS Tasar\u0131m\u0131 Nas\u0131l Yap\u0131l\u0131r?<\/span><\/h2>\n<p>Sadece e\u2011posta kullanmak istedi\u011finizde en \u00e7ok kar\u0131\u015ft\u0131r\u0131lan nokta \u015fu: <strong>Web sitem yoksa alan ad\u0131m\u0131n A kayd\u0131 olmak zorunda m\u0131?<\/strong> Teknik olarak hay\u0131r, ama pratikte \u00e7o\u011fu senaryoda k\u00fc\u00e7\u00fck bir A kayd\u0131 tan\u0131mlamak i\u015finizi kolayla\u015ft\u0131r\u0131r.<\/p>\n<p>En s\u0131k kulland\u0131\u011f\u0131m\u0131z basit \u015fablon \u015f\u00f6yle:<\/p>\n<ul>\n<li><strong>mail.alanadi.com<\/strong> i\u00e7in bir A (ve m\u00fcmk\u00fcnse AAAA) kayd\u0131<\/li>\n<li><strong>MX<\/strong> kayd\u0131: alanadi.com &rarr; mail.alanadi.com<\/li>\n<li><strong>SPF<\/strong> i\u00e7in bir TXT kayd\u0131: <code>v=spf1 mx ~all<\/code> veya mimarinize g\u00f6re g\u00fcncellenmi\u015f hali<\/li>\n<li>DKIM, DMARC, MTA\u2011STS gibi ek g\u00fcvenlik kay\u0131tlar\u0131<\/li>\n<\/ul>\n<p>Bu mimaride <strong>www.alanadi.com<\/strong> i\u00e7in hi\u00e7bir kay\u0131t tan\u0131mlamak zorunda de\u011filsiniz. Dilerseniz park sayfas\u0131na, ileride a\u00e7aca\u011f\u0131n\u0131z siteye ya da \u015firketinizin LinkedIn\/Instagram profilinize 301 y\u00f6nlendirmesi yapan bir basit landing sayfas\u0131 da bar\u0131nd\u0131rabilirsiniz; ama bu tamamen opsiyonel.<\/p>\n<p>DNS t\u00fcrleri ve hangi kayd\u0131n ne i\u015fe yarad\u0131\u011f\u0131n\u0131 daha temelden okumak isterseniz, DCHost blogdaki <a href='https:\/\/www.dchost.com\/blog\/dns-kayitlari-adan-zye-a-aaaa-cname-mx-txt-srv-caa-ve-sizi-yakan-o-kucuk-hatalar\/'>DNS kay\u0131tlar\u0131 A\u2019dan Z\u2019ye rehberi<\/a> bu yaz\u0131yla \u00e7ok iyi tamamlay\u0131c\u0131 olacakt\u0131r.<\/p>\n<h2><span id=\"Sadece_EPosta_Icin_Zorunlu_ve_Onerilen_DNS_Kayitlari\">Sadece E\u2011Posta \u0130\u00e7in Zorunlu ve \u00d6nerilen DNS Kay\u0131tlar\u0131<\/span><\/h2>\n<p>\u015eimdi detaylara inelim. Web siteniz olmasa bile, kurumsal e\u2011posta altyap\u0131n\u0131z i\u00e7in mutlaka tan\u0131mlaman\u0131z gereken (ve tan\u0131mlaman\u0131z \u015fiddetle \u00f6nerilen) kay\u0131tlar var.<\/p>\n<h3><span id=\"1_MX_Kaydi_EPostanin_Gidecegi_Sunucuyu_Belirlemek\">1) MX Kayd\u0131: E\u2011Postan\u0131n Gidece\u011fi Sunucuyu Belirlemek<\/span><\/h3>\n<p><strong>MX (Mail Exchanger)<\/strong> kayd\u0131, alan ad\u0131n\u0131za gelen e\u2011postalar\u0131n hangi sunucuya teslim edilece\u011fini s\u00f6yler. \u00d6rnek bir kurulum:<\/p>\n<ul>\n<li><strong>Ad:<\/strong> alanadi.com<\/li>\n<li><strong>T\u00fcr:<\/strong> MX<\/li>\n<li><strong>De\u011fer:<\/strong> mail.alanadi.com<\/li>\n<li><strong>\u00d6ncelik:<\/strong> 10<\/li>\n<\/ul>\n<p>Burada dikkat etmeniz gereken iki nokta var:<\/p>\n<ul>\n<li><strong>MX hedefi mutlaka bir hostname olmal\u0131<\/strong> (mail.alanadi.com gibi), do\u011frudan IP yaz\u0131lmaz.<\/li>\n<li>Bu hostname i\u00e7in bir <strong>A veya AAAA kayd\u0131<\/strong> tan\u0131mlanm\u0131\u015f olmal\u0131, aksi halde g\u00f6nderici sunucular IP adresini \u00e7\u00f6zemeyecektir.<\/li>\n<\/ul>\n<h3><span id=\"2_AAAAA_Kayitlari_Mail_Sunucusunun_IPsini_Tanimlamak\">2) A\/AAAA Kay\u0131tlar\u0131: Mail Sunucusunun IP\u2019sini Tan\u0131mlamak<\/span><\/h3>\n<p>MX kayd\u0131n\u0131z\u0131n i\u015faret etti\u011fi <strong>mail.alanadi.com<\/strong> i\u00e7in IP kay\u0131tlar\u0131n\u0131 tan\u0131mlars\u0131n\u0131z:<\/p>\n<ul>\n<li><strong>mail.alanadi.com &rarr; A &rarr; 203.0.113.10<\/strong> (IPv4)<\/li>\n<li><strong>mail.alanadi.com &rarr; AAAA &rarr; 2001:db8::10<\/strong> (IPv6, varsa)<\/li>\n<\/ul>\n<p>Modern d\u00fcnyada IPv6 kullan\u0131m\u0131 h\u0131zla artt\u0131\u011f\u0131 i\u00e7in, e\u011fer DCHost \u00fczerinden IPv6 destekli bir VPS ya da hosting kullan\u0131yorsan\u0131z, <strong>AAAA kayd\u0131 eklemeyi<\/strong> de tavsiye ediyoruz. IPv6 ile e\u2011posta g\u00f6nderimi ve DNS taraf\u0131ndaki gereksinimler i\u00e7in, blogdaki <a href='https:\/\/www.dchost.com\/blog\/ipv6-ile-e-posta-gonderimi-reverse-dns-spf-ve-teslim-edilebilirlik-rehberi\/'>IPv6 ile e\u2011posta teslimi rehberimiz<\/a> size daha da derin bir bak\u0131\u015f sunabilir.<\/p>\n<h3><span id=\"3_SPF_Kaydi_Hangi_Sunucun_Adiniza_Mail_Gonderebilecegini_Ilan_Etmek\">3) SPF Kayd\u0131: Hangi Sunucun Ad\u0131n\u0131za Mail G\u00f6nderebilece\u011fini \u0130lan Etmek<\/span><\/h3>\n<p><strong>SPF (Sender Policy Framework)<\/strong>, alan ad\u0131n\u0131z ad\u0131na kimlerin e\u2011posta g\u00f6ndermeye yetkili oldu\u011funu s\u00f6yleyen bir TXT kayd\u0131d\u0131r. En basit haliyle, yaln\u0131zca MX sunucular\u0131n\u0131z\u0131n mail g\u00f6ndermesine izin vermek i\u00e7in \u015fu kayd\u0131 kullanabilirsiniz:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">Ad: alanadi.com\nT\u00fcr: TXT\nDe\u011fer: v=spf1 mx ~all<\/code><\/pre>\n<p>Daha karma\u015f\u0131k yap\u0131larda (farkl\u0131 servislerden transactional e\u2011posta, pazarlama e\u2011postas\u0131, ticket sistemi vb.) SPF tasar\u0131m\u0131 h\u0131zla kar\u0131\u015fabilir. \u00dcstelik 10 DNS lookup limiti gibi teknik s\u0131n\u0131rlar da vard\u0131r. SPF, DKIM ve DMARC\u2019\u0131 birlikte ele ald\u0131\u011f\u0131m\u0131z <a href='https:\/\/www.dchost.com\/blog\/spf-dkim-ve-dmarc-nedir-ozel-alan-adi-ile-e-posta-dogrulamasini-cpanel-ve-vpste-sifirdan-kurmak\/'>\u00f6zel alan ad\u0131yla e\u2011posta do\u011frulama rehberimizde<\/a> hem temel, hem de geli\u015fmi\u015f senaryolar\u0131 ad\u0131m ad\u0131m anlatt\u0131k.<\/p>\n<h3><span id=\"4_DKIM_Kaydi_Icerik_Butunlugunu_Kriptografik_Olarak_Imzalamak\">4) DKIM Kayd\u0131: \u0130\u00e7erik B\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc Kriptografik Olarak \u0130mzalamak<\/span><\/h3>\n<p><strong>DKIM (DomainKeys Identified Mail)<\/strong>, g\u00f6nderdi\u011finiz e\u2011postalar\u0131n i\u00e7erik ve ba\u015fl\u0131klar\u0131n\u0131n sizden \u00e7\u0131kt\u0131\u011f\u0131n\u0131 kriptografik imza ile kan\u0131tlar. Teknik olarak:<\/p>\n<ul>\n<li>Mail sunucunuz (veya kulland\u0131\u011f\u0131n\u0131z servis), her e\u2011postay\u0131 imzalar.<\/li>\n<li>Al\u0131c\u0131 taraf, DNS\u2019te yay\u0131nlad\u0131\u011f\u0131n\u0131z DKIM TXT kayd\u0131ndaki <strong>a\u00e7\u0131k anahtar\u0131<\/strong> kullanarak imzay\u0131 do\u011frular.<\/li>\n<\/ul>\n<p>DKIM kayd\u0131, \u00e7o\u011fu panelde otomatik \u00fcretilir. Siz sadece ilgili TXT kayd\u0131n\u0131 DNS\u2019e eklemi\u015f olursunuz. Sadece e\u2011posta i\u00e7in hosting kullan\u0131yorsan\u0131z bile, <strong>DKIM\u2019i devreye almadan<\/strong> yola \u00e7\u0131kmaman\u0131z\u0131 \u00f6neririz; spam filtreleri a\u00e7\u0131s\u0131ndan b\u00fcy\u00fck pozitif sinyaldir.<\/p>\n<h3><span id=\"5_DMARC_Kaydi_SPF_ve_DKIM_Politikanizi_Ilan_Etmek\">5) DMARC Kayd\u0131: SPF ve DKIM Politikan\u0131z\u0131 \u0130lan Etmek<\/span><\/h3>\n<p><strong>DMARC<\/strong>, SPF ve DKIM sonu\u00e7lar\u0131na g\u00f6re al\u0131c\u0131 sunucular\u0131n nas\u0131l davranmas\u0131n\u0131 istedi\u011finizi belirledi\u011finiz politikad\u0131r. \u00d6rnek bir ba\u015flang\u0131\u00e7 kayd\u0131:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">Ad: _dmarc.alanadi.com\nT\u00fcr: TXT\nDe\u011fer: v=DMARC1; p=none; rua=mailto:dmarc-rapor@alanadi.com<\/code><\/pre>\n<p>Burada:<\/p>\n<ul>\n<li><strong>p=none<\/strong> ile hen\u00fcz sert bir politika uygulamadan rapor toplars\u0131n\u0131z.<\/li>\n<li><strong>rua=<\/strong> ile toplu raporlar\u0131n geldi\u011fi e\u2011posta adresini belirlersiniz.<\/li>\n<\/ul>\n<p>Zamanla DMARC uyumunuzu g\u00f6rd\u00fck\u00e7e politikay\u0131 <code>quarantine<\/code> ya da <code>reject<\/code> seviyesine \u00e7ekebilirsiniz. DMARC\u2019\u0131n raporlama ve marka taraf\u0131ndaki (\u00f6rne\u011fin BIMI) etkilerini daha derin okumak isterseniz, blogdaki <a href='https:\/\/www.dchost.com\/blog\/spf-dkim-dmarc-ve-rdns-ile-e-posta-teslim-edilebilirligini-nasil-adim-adim-yukseltirsin\/'>SPF, DKIM, DMARC ve rDNS ile teslim edilebilirli\u011fi art\u0131rma rehberimiz<\/a> iyi bir sonraki ad\u0131md\u0131r.<\/p>\n<h3><span id=\"6_PTR_Reverse_DNS_Kaydi_IP_rarr_Alan_Adi_Eslemesi\">6) PTR (Reverse DNS) Kayd\u0131: IP &rarr; Alan Ad\u0131 E\u015flemesi<\/span><\/h3>\n<p><strong>PTR<\/strong> veya reverse DNS kayd\u0131, IP adresinizden alan ad\u0131n\u0131za ters y\u00f6nde \u00e7\u00f6z\u00fcm yap\u0131lmas\u0131n\u0131 sa\u011flar. Bir\u00e7ok al\u0131c\u0131 mail sunucusu, ba\u011flant\u0131 kuran IP\u2019nin reverse DNS\u2019ini kontrol eder ve bunun SMTP oturumunda tan\u0131t\u0131lan host ad\u0131yla tutarl\u0131 olmas\u0131n\u0131 bekler.<\/p>\n<p>DCHost \u00fczerinde VPS veya <a href=\"https:\/\/www.dchost.com\/tr\/fiziksel-sunucu\">dedicated sunucu<\/a> kullan\u0131yorsan\u0131z, support ekibimiz sizin i\u00e7in IP\u2019lere uygun PTR kay\u0131tlar\u0131n\u0131 tan\u0131mlayabilir. Bu i\u015flem \u00e7o\u011fu zaman <strong>hosting panelinden de\u011fil<\/strong>, IP y\u00f6netim katman\u0131ndan yap\u0131l\u0131r; dolay\u0131s\u0131yla PTR\u2019nin eksik olmas\u0131, ama DNS taraf\u0131nda her \u015feyin do\u011fru g\u00f6r\u00fcnmesi s\u0131k g\u00f6rd\u00fc\u011f\u00fcm\u00fcz bir tuzakt\u0131r. Bu konuyu ayr\u0131 ele ald\u0131\u011f\u0131m\u0131z <a href='https:\/\/www.dchost.com\/blog\/ptr-reverse-dns-kaydi-vps-ipniz-icin-dogru-ayar-ve-e-posta-teslimine-etkisi\/'>PTR ve e\u2011posta teslimi rehberine<\/a> mutlaka g\u00f6z at\u0131n.<\/p>\n<h3><span id=\"7_MTASTS_ve_TLSRPT_Zorunlu_Sifreleme_Politikasi\">7) MTA\u2011STS ve TLS\u2011RPT: Zorunlu \u015eifreleme Politikas\u0131<\/span><\/h3>\n<p><strong>MTA\u2011STS<\/strong>, alan ad\u0131n\u0131za gelen e\u2011postalar\u0131n <strong>mutlaka TLS \u00fczerinden, belirledi\u011finiz host ad\u0131 ve sertifika gereksinimleriyle<\/strong> teslim edilmesini talep etmenizi sa\u011flar. <strong>TLS\u2011RPT<\/strong> ise bu politikaya uyulmayan veya hata ya\u015fanan durumlar\u0131n raporlanmas\u0131n\u0131 m\u00fcmk\u00fcn k\u0131lar.<\/p>\n<p>Sadece e\u2011posta i\u00e7in hosting kullansan\u0131z bile, \u00f6zellikle KVKK\/GDPR hassasiyeti olan sekt\u00f6rlerde MTA\u2011STS ve TLS\u2011RPT\u2019yi devreye almak, e\u2011posta g\u00fcvenli\u011fine ciddi seviye atlat\u0131r. A\u015famalar\u0131, TXT ve policy dosyas\u0131 \u00f6rnekleriyle birlikte <a href='https:\/\/www.dchost.com\/blog\/mta-sts-tls-rpt-ve-dane-tlsa-ile-smtp-guvenligi-teslim-edilebilirligi-ve-sifrelemeyi-nasil-guclendirirsin\/'>MTA\u2011STS, TLS\u2011RPT ve DANE\/TLSA rehberimizde<\/a> detayl\u0131 bi\u00e7imde bulabilirsiniz.<\/p>\n<h2><span id=\"Guvenlik_ve_Teslim_Edilebilirlik_Perspektifinden_Mimari_Tasarim\">G\u00fcvenlik ve Teslim Edilebilirlik Perspektifinden Mimari Tasar\u0131m<\/span><\/h2>\n<p>DNS kay\u0131tlar\u0131n\u0131 kurmak yaln\u0131zca ba\u015flang\u0131\u00e7. E\u2011postan\u0131n ger\u00e7ekten <strong>g\u00fcvenli<\/strong> ve <strong>teslim edilebilirli\u011fi y\u00fcksek<\/strong> \u00e7al\u0131\u015fmas\u0131 i\u00e7in birka\u00e7 mimari karara daha ihtiya\u00e7 var.<\/p>\n<h3><span id=\"Paylasimli_IP_mi_Dedicated_IP_mi\">Payla\u015f\u0131ml\u0131 IP mi, Dedicated IP mi?<\/span><\/h3>\n<p>Sadece e\u2011posta i\u00e7in hosting kullan\u0131rken, genellikle payla\u015f\u0131ml\u0131 IP \u00fczerinden \u00e7\u0131k\u0131\u015f yap\u0131l\u0131r. Bu, k\u00fc\u00e7\u00fck \u00f6l\u00e7ekli i\u015fletmeler i\u00e7in maliyet avantaj\u0131 sa\u011flar; ancak ayn\u0131 IP\u2019yi kullanan ba\u015fka bir kullan\u0131c\u0131n\u0131n k\u00f6t\u00fc g\u00f6nderim yapmas\u0131, <strong>IP itibar\u0131n\u0131<\/strong> olumsuz etkileyebilir. Buna kar\u015f\u0131n, DCHost \u00fczerinde kendi VPS veya dedicated sunucunuzu kullan\u0131p <strong>\u00f6zel IP<\/strong> ile e\u2011posta g\u00f6ndermek:<\/p>\n<ul>\n<li>IP itibar\u0131n\u0131 tamamen sizin kontrol\u00fcn\u00fcze b\u0131rak\u0131r,<\/li>\n<li>IP \u0131s\u0131tma stratejisi uygulaman\u0131za imkan tan\u0131r,<\/li>\n<li>B\u00fcy\u00fck sa\u011flay\u0131c\u0131larla daha kestirilebilir sonu\u00e7lar \u00fcretir.<\/li>\n<\/ul>\n<p>Dedicated IP ve \u0131s\u0131tma konusu, kendi ba\u015f\u0131na derin bir alan. Bu nedenle ayr\u0131 bir yaz\u0131da <a href='https:\/\/www.dchost.com\/blog\/dedicated-ip-isitma-ve-e-posta-itibari-yonetimi\/'>dedicated IP \u0131s\u0131tma ve e\u2011posta itibar\u0131 y\u00f6netimini<\/a> detayl\u0131 ele ald\u0131k. Sadece e\u2011posta i\u00e7in VPS kullanmay\u0131 d\u00fc\u015f\u00fcn\u00fcyorsan\u0131z, bu rehberi oyun plan\u0131n\u0131z\u0131n par\u00e7as\u0131 yapman\u0131zda fayda var.<\/p>\n<h3><span id=\"Guclu_Kimlik_Dogrulama_ve_Erisim_Kontrolleri\">G\u00fc\u00e7l\u00fc Kimlik Do\u011frulama ve Eri\u015fim Kontrolleri<\/span><\/h3>\n<p>Kullan\u0131c\u0131 taraf\u0131nda atlanmamas\u0131 gereken noktalar:<\/p>\n<ul>\n<li>T\u00fcm posta kutular\u0131 i\u00e7in <strong>uzun ve karma\u015f\u0131k \u015fifreler<\/strong> zorunlu olmal\u0131.<\/li>\n<li>IMAP\/SMTP ba\u011flant\u0131lar\u0131 mutlaka <strong>STARTTLS\/SMTPS<\/strong> ile \u015fifrelenmi\u015f \u015fekilde yap\u0131land\u0131r\u0131lmal\u0131.<\/li>\n<li>M\u00fcmk\u00fcnse webmail\/panel eri\u015fiminde <strong>iki fakt\u00f6rl\u00fc kimlik do\u011frulama (2FA)<\/strong> aktif edilmeli.<\/li>\n<li>IP bazl\u0131 k\u0131s\u0131tlama, rate limiting, bruteforce korumas\u0131 gibi g\u00fcvenlik \u00f6nlemleri sunucu taraf\u0131nda a\u00e7\u0131k olmal\u0131.<\/li>\n<\/ul>\n<p>DCHost ortamlar\u0131nda, \u00f6zellikle VPS ve dedicated sunucularda <strong>fail2ban, firewall, sshd_config sertle\u015ftirme<\/strong> gibi ek katmanlar\u0131 da devreye alman\u0131z\u0131 \u00f6neriyoruz. Bu konular\u0131 daha geni\u015f \u00e7er\u00e7evede ele ald\u0131\u011f\u0131m\u0131z <a href='https:\/\/www.dchost.com\/blog\/vps-sunucu-guvenligi-pratik-olceklenebilir-ve-dogrulanabilir-yaklasimlar\/'>VPS sunucu g\u00fcvenli\u011fi rehberimiz<\/a>, e\u2011posta sunucusu kurarken de birebir uygulanabilir prensipler i\u00e7eriyor.<\/p>\n<h3><span id=\"Teslim_Edilebilirligi_Izlemek_ve_Iyilestirmek\">Teslim Edilebilirli\u011fi \u0130zlemek ve \u0130yile\u015ftirmek<\/span><\/h3>\n<p>Teknik kay\u0131tlar do\u011fru olsa bile, ger\u00e7ek d\u00fcnyada teslim edilebilirlik; i\u00e7erik kalitesi, g\u00f6nderim hacmi, bounce oranlar\u0131 ve kullan\u0131c\u0131 etkile\u015fimi gibi pek \u00e7ok fakt\u00f6re ba\u011fl\u0131. Mimari a\u00e7\u0131dan \u015funlar\u0131 \u00f6neriyoruz:<\/p>\n<ul>\n<li>Yeni alan ad\u0131nda agresif kampanya g\u00f6nderimi yerine, <strong>hacmi kademeli art\u0131rarak<\/strong> IP\/alan ad\u0131 \u0131s\u0131nd\u0131r\u0131n.<\/li>\n<li>Bounce\u2019lar\u0131 (geri d\u00f6nen e\u2011postalar) aktif izleyin, ge\u00e7ersiz adresleri h\u0131zl\u0131ca listelerinizden \u00e7\u0131kar\u0131n.<\/li>\n<li>DMARC ve TLS\u2011RPT raporlar\u0131n\u0131 d\u00fczenli okuyun, yanl\u0131\u015f yap\u0131land\u0131r\u0131lm\u0131\u015f kaynaklar\u0131 tespit edin.<\/li>\n<li>Sistemin \u00fcretti\u011fi SMTP hata kodlar\u0131 ve bounce mesajlar\u0131n\u0131 anlamland\u0131rmak i\u00e7in, DCHost blogdaki <a href='https:\/\/www.dchost.com\/blog\/smtp-hata-kodlari-ve-bounce-mesajlari-rehberi\/'>SMTP hata kodlar\u0131 ve bounce mesajlar\u0131 rehberinden<\/a> yararlan\u0131n.<\/li>\n<\/ul>\n<h2><span id=\"Yedeklilik_Bir_Sunucuya_Bagimli_Kalmayan_EPosta_Altyapisi\">Yedeklilik: Bir Sunucuya Ba\u011f\u0131ml\u0131 Kalmayan E\u2011Posta Altyap\u0131s\u0131<\/span><\/h2>\n<p>Sadece e\u2011posta i\u00e7in hosting kullan\u0131yorsan\u0131z, sistemin tek bir noktaya ba\u011fl\u0131 kalmas\u0131 risklidir. Donan\u0131m ar\u0131zas\u0131, a\u011f problemi veya yanl\u0131\u015f bir g\u00fcvenlik kural\u0131, <strong>t\u00fcm \u015firketin mail trafi\u011fini<\/strong> etkileyebilir. Bunu azaltmak i\u00e7in:<\/p>\n<ul>\n<li>Birden fazla MX kayd\u0131 tan\u0131mlay\u0131p <strong>backup MX<\/strong> senaryosu kurabilir,<\/li>\n<li>Birincil sunucu eri\u015filemez oldu\u011funda devreye girecek ikincil bir MTA planlayabilir,<\/li>\n<li>B\u00fcy\u00fck kurumlarda <strong>split delivery<\/strong> ile baz\u0131 kutular\u0131 lokal sunucuda, baz\u0131lar\u0131n\u0131 harici serviste tutabilirsiniz.<\/li>\n<\/ul>\n<p>Bu senaryolar\u0131 ad\u0131m ad\u0131m anlatt\u0131\u011f\u0131m\u0131z <a href='https:\/\/www.dchost.com\/blog\/e-posta-altyapisinda-yedeklilik-birden-fazla-mx-kaydi-backup-mx-ve-split-delivery-kurulumu\/'>e\u2011posta altyap\u0131s\u0131nda yedeklilik rehberi<\/a>, \u00f6zellikle SLA beklentisi y\u00fcksek kurumlarda mutlaka incelenmesi gereken bir kaynak. DCHost \u00fczerinde iki farkl\u0131 lokasyonda VPS kullanarak <strong>aktif\/pasif<\/strong> veya <strong>aktif\/aktif<\/strong> e\u2011posta mimarileri tasarlamak m\u00fcmk\u00fcn.<\/p>\n<h2><span id=\"Yalnizca_EPosta_Icin_Ornek_Mimariler\">Yaln\u0131zca E\u2011Posta \u0130\u00e7in \u00d6rnek Mimariler<\/span><\/h2>\n<p>Teoriyi somutla\u015ft\u0131rmak i\u00e7in \u00fc\u00e7 tipik senaryoyu \u00f6zetleyelim.<\/p>\n<h3><span id=\"Senaryo_1_10_Kisilik_Muhasebe_Burosu_Paylasimli_EPosta_Hosting\">Senaryo 1: 10 Ki\u015filik Muhasebe B\u00fcrosu \u2013 Payla\u015f\u0131ml\u0131 E\u2011Posta Hosting<\/span><\/h3>\n<p>Bu senaryoda hedef; d\u00fc\u015f\u00fck maliyet, basit y\u00f6netim ve temel g\u00fcvenlik. Mimari:<\/p>\n<ul>\n<li>DCHost \u00fczerinde k\u00fc\u00e7\u00fck bir <a href=\"https:\/\/www.dchost.com\/tr\/web-hosting\">payla\u015f\u0131ml\u0131 hosting<\/a> paketi a\u00e7\u0131l\u0131r.<\/li>\n<li>Alan ad\u0131n\u0131n nameserver kay\u0131tlar\u0131 DCHost\u2019a y\u00f6nlendirilir.<\/li>\n<li>DNS\u2019te yaln\u0131zca \u015fu kay\u0131tlar bulunur: MX, mail.alanadi.com i\u00e7in A, SPF, DKIM, DMARC.<\/li>\n<li>Kullan\u0131c\u0131lar IMAP \u00fczerinden ba\u011flan\u0131r, webmail yedek eri\u015fim olarak kullan\u0131l\u0131r.<\/li>\n<\/ul>\n<p>Web sitesi hen\u00fcz yoktur, ama ileride WordPress kurulmak istendi\u011finde ayn\u0131 pakette bir klas\u00f6r daha a\u00e7mak yeterlidir. Bu, <strong>sadece e\u2011posta ile ba\u015flay\u0131p b\u00fcy\u00fcmeye a\u00e7\u0131k<\/strong> tipik bir ofis yap\u0131s\u0131d\u0131r.<\/p>\n<h3><span id=\"Senaryo_2_70_Kisilik_Dagitik_Ekip_DCHost_VPS_Uzerinde_Kendi_MTA\">Senaryo 2: 70 Ki\u015filik Da\u011f\u0131t\u0131k Ekip \u2013 DCHost VPS \u00dczerinde Kendi MTA<\/span><\/h3>\n<p>Burada ihtiya\u00e7lar biraz daha karma\u015f\u0131k: Farkl\u0131 lokasyonlarda \u00e7al\u0131\u015fan ekipler, y\u00fcksek say\u0131da g\u00fcnl\u00fck e\u2011posta, detayl\u0131 loglama ve ar\u015fiv zorunlulu\u011fu. Mimari \u015f\u00f6yle \u015fekillenir:<\/p>\n<ul>\n<li>DCHost\u2019ta NVMe diskli, orta seviyede vCPU\/RAM\u2019e sahip bir VPS kiralan\u0131r.<\/li>\n<li>Postfix + Dovecot + rspamd gibi bile\u015fenlerle g\u00fc\u00e7l\u00fc bir mail stack kurulur.<\/li>\n<li>Harici bir object storage veya ikinci VPS \u00fczerinde <strong>IMAP yedekleri ve g\u00fcnl\u00fck snapshot\u2019lar<\/strong> tutulur.<\/li>\n<li>DMARC ve MTA\u2011STS raporlar\u0131 d\u00fczenli olarak analiz edilir.<\/li>\n<\/ul>\n<p>Bu yap\u0131da, sadece e\u2011posta i\u00e7in dahi olsa, <strong>geli\u015fmi\u015f monitoring ve alerting<\/strong> (disk dolulu\u011fu, queue uzunlu\u011fu, outbound hata oran\u0131 vb.) kurulmas\u0131n\u0131 kesinlikle \u00f6neriyoruz. DCHost blogda VPS izleme ve alarm kurulumunu Prometheus ve Grafana ile anlatt\u0131\u011f\u0131m\u0131z yaz\u0131, burada do\u011frudan uygulanabilir.<\/p>\n<h3><span id=\"Senaryo_3_Ajans_Onlarca_Musteri_Alan_Adi_icin_Merkezi_Mail_ve_DNS\">Senaryo 3: Ajans \u2013 Onlarca M\u00fc\u015fteri Alan Ad\u0131 i\u00e7in Merkezi Mail ve DNS<\/span><\/h3>\n<p>Ajans taraf\u0131nda s\u0131k g\u00f6rd\u00fc\u011f\u00fcm\u00fcz di\u011fer bir model; onlarca k\u00fc\u00e7\u00fck m\u00fc\u015fterinin <strong>sadece e\u2011posta<\/strong> altyap\u0131s\u0131n\u0131 y\u00f6netmek. \u00d6rne\u011fin:<\/p>\n<ul>\n<li>DCHost \u00fczerinde g\u00fc\u00e7l\u00fc bir VPS veya birka\u00e7 VPS ile <strong>multi\u2011tenant mail sunucusu<\/strong> kurulur.<\/li>\n<li>Her m\u00fc\u015fteri alan ad\u0131 i\u00e7in MX, SPF, DKIM, DMARC kay\u0131tlar\u0131 ajans\u0131n y\u00f6netti\u011fi DNS \u00fczerinde tutulur.<\/li>\n<li>Ajans, m\u00fc\u015fterilere kullan\u0131c\u0131 hesab\u0131 ve kota a\u00e7ar; web sitesi ba\u015fka sa\u011flay\u0131c\u0131da olsa bile e\u2011posta tek merkezden y\u00f6netilir.<\/li>\n<\/ul>\n<p>Bu yakla\u015f\u0131mla tek panelden onlarca m\u00fc\u015fteri e\u2011postas\u0131 y\u00f6netilebilir. Ayr\u0131nt\u0131l\u0131 tasar\u0131m, yetki s\u0131n\u0131rlar\u0131 ve g\u00fcvenlik taraf\u0131n\u0131, ajanslara \u00f6zel haz\u0131rlad\u0131\u011f\u0131m\u0131z <a href='https:\/\/www.dchost.com\/blog\/ajanslar-icin-multi-tenant-e-posta-ve-dns-mimarisi-tek-sunucuda-onlarca-musteri-yonetmek\/'>multi\u2011tenant e\u2011posta ve DNS mimarisi rehberinde<\/a> bulabilirsiniz.<\/p>\n<h2><span id=\"Yedekleme_Arsiv_ve_Log_Yonetimi\">Yedekleme, Ar\u015fiv ve Log Y\u00f6netimi<\/span><\/h2>\n<p>Sadece e\u2011posta i\u00e7in hosting kulland\u0131\u011f\u0131n\u0131zda, sistemdeki <strong>tek kritik veri<\/strong> \u00e7o\u011fu zaman e\u2011posta kutular\u0131n\u0131n i\u00e7eri\u011fi oluyor. Bu y\u00fczden yedekleme ve ar\u015fiv konusunu hafife almamak gerekiyor.<\/p>\n<ul>\n<li><strong>IMAP tabanl\u0131 eri\u015fim<\/strong> son kullan\u0131c\u0131lar\u0131n mailleri sunucuda tutmas\u0131n\u0131 sa\u011flar; bu da merkezi yedeklemeyi kolayla\u015ft\u0131r\u0131r.<\/li>\n<li>cPanel veya VPS taraf\u0131nda g\u00fcnl\u00fck\/haftal\u0131k <strong>tam yedek<\/strong> ve <strong>art\u0131ml\u0131 yedek<\/strong> politikalar\u0131 belirlenmeli.<\/li>\n<li>Uzun s\u00fcre saklanmas\u0131 gereken e\u2011postalar i\u00e7in <strong>ar\u015fiv sunucusu veya journaling<\/strong> mimarisi de\u011ferlendirilmeli.<\/li>\n<li>KVKK\/GDPR ba\u011flam\u0131nda, <strong>log saklama s\u00fcreleri<\/strong> ve <strong>silme politikalar\u0131<\/strong> yaz\u0131l\u0131 hale getirilmeli.<\/li>\n<\/ul>\n<p>DCHost olarak, e\u2011posta ar\u015fivleme ve yasal saklama politikalar\u0131n\u0131 hem cPanel hem de VPS taraf\u0131nda nas\u0131l kurabilece\u011finizi <em>(journaling, harici depolama, saklama s\u00fcreleri)<\/em> ayr\u0131 rehberlerde ad\u0131m ad\u0131m ele ald\u0131k. Sadece e\u2011posta kullanan yap\u0131lar i\u00e7in bu rehberleri operasyonel prosed\u00fcrlerinizle birle\u015ftirmenizi tavsiye ederiz.<\/p>\n<h2><span id=\"DCHost_ile_Sadece_EPosta_Altyapisini_Adim_Adim_Kurmak\">DCHost ile Sadece E\u2011Posta Altyap\u0131s\u0131n\u0131 Ad\u0131m Ad\u0131m Kurmak<\/span><\/h2>\n<p>Toparlayal\u0131m. DCHost \u00fczerinde sadece e\u2011posta i\u00e7in temiz bir mimari kurmak istiyorsan\u0131z tipik yol haritas\u0131 \u015fu \u015fekilde:<\/p>\n<ol>\n<li><strong>Alan ad\u0131n\u0131z\u0131<\/strong> kaydedin veya mevcut alan ad\u0131n\u0131z\u0131 kullanmaya karar verin.<\/li>\n<li>\u0130htiyac\u0131n\u0131za g\u00f6re <strong>payla\u015f\u0131ml\u0131 e\u2011posta hosting<\/strong> ya da <strong>VPS\/dedicated<\/strong> se\u00e7in.<\/li>\n<li>Alan ad\u0131n\u0131z\u0131n <strong>nameserver<\/strong> kay\u0131tlar\u0131n\u0131 DCHost DNS\u2019e y\u00f6nlendirin.<\/li>\n<li>Panelden gerekli <strong>MX, A\/AAAA, SPF, DKIM, DMARC<\/strong> kay\u0131tlar\u0131n\u0131 olu\u015fturun.<\/li>\n<li>Gerekirse <strong>PTR (reverse DNS)<\/strong> i\u00e7in destek talebi a\u00e7\u0131n.<\/li>\n<li><strong>MTA\u2011STS\/TLS\u2011RPT<\/strong> gibi geli\u015fmi\u015f g\u00fcvenlik \u00f6zelliklerini planlay\u0131n.<\/li>\n<li>Kullan\u0131c\u0131 Posta kutular\u0131n\u0131 olu\u015fturup, IMAP\/SMTP ayarlar\u0131n\u0131 m\u00fc\u015fterilere\/\u00e7al\u0131\u015fanlara dok\u00fcmante edin.<\/li>\n<li>Yedekleme, log saklama ve ar\u015fiv politikalar\u0131n\u0131z\u0131 yaz\u0131l\u0131 hale getirin ve periyodik test edin.<\/li>\n<\/ol>\n<p>Bu ad\u0131mlar\u0131n bir\u00e7o\u011funu, <a href='https:\/\/www.dchost.com\/blog\/kendi-alan-adinizla-kurumsal-e-posta-kurma-rehberi\/'>kendi alan ad\u0131n\u0131zla kurumsal e\u2011posta kurma rehberimizde<\/a> g\u00f6rsel ekran al\u0131nt\u0131lar\u0131yla da anlatt\u0131k. Bu yaz\u0131 ise daha \u00e7ok <strong>mimari ve g\u00fcvenlik perspektifini<\/strong> tamaml\u0131yor.<\/p>\n<h2><span id=\"Sonuc_Web_Sitesi_Olmadan_da_Kurumsal_EPosta_Mumkun_Onemli_Olan_Mimari\">Sonu\u00e7: Web Sitesi Olmadan da Kurumsal E\u2011Posta M\u00fcmk\u00fcn, \u00d6nemli Olan Mimari<\/span><\/h2>\n<p>Web siteniz hen\u00fcz haz\u0131r olmasa bile, alan ad\u0131n\u0131zla profesyonel e\u2011posta kullanman\u0131z\u0131n \u00f6n\u00fcnde hi\u00e7bir teknik engel yok. Kritik olan, <strong>DNS kay\u0131tlar\u0131n\u0131 do\u011fru tasarlamak<\/strong>, SPF\/DKIM\/DMARC \u00fc\u00e7l\u00fcs\u00fcn\u00fc eksiksiz kurmak ve PTR, MTA\u2011STS, TLS\u2011RPT gibi detaylar\u0131 g\u00f6z ard\u0131 etmemek. Sadece e\u2011posta i\u00e7in tercih edece\u011finiz hosting mimarisi; \u015firketinizin b\u00fcy\u00fckl\u00fc\u011f\u00fc, teknik ekibinizin yetkinli\u011fi ve reg\u00fclasyon gereksinimlerinizle birebir ba\u011flant\u0131l\u0131.<\/p>\n<p>DCHost olarak, ister payla\u015f\u0131ml\u0131 bir e\u2011posta altyap\u0131s\u0131yla k\u00fc\u00e7\u00fck \u00f6l\u00e7ekli ba\u015flay\u0131n, ister kendi VPS\u2019iniz \u00fczerinde kurumsal seviyede bir mail sunucusu in\u015fa edin; <strong>DNS tasar\u0131m\u0131, g\u00fcvenlik ve teslim edilebilirlik<\/strong> taraf\u0131nda yan\u0131n\u0131zday\u0131z. Mevcut senaryonuzu birlikte g\u00f6zden ge\u00e7irip; hangi kay\u0131tlar\u0131n eksik, hangi g\u00fcvenlik katmanlar\u0131n\u0131n devreye al\u0131nmas\u0131 gerekti\u011fini netle\u015ftirmek isterseniz, destek ekibimize birka\u00e7 \u00f6rnek e\u2011posta ba\u015fl\u0131\u011f\u0131 ve hata mesaj\u0131yla ula\u015fman\u0131z yeterli.<\/p>\n<p>Bir sonraki ad\u0131mda, alan ad\u0131n\u0131z ve DNS altyap\u0131n\u0131z\u0131n tamam\u0131n\u0131 masaya yat\u0131rmak isterseniz, <a href='https:\/\/www.dchost.com\/blog\/dns-ttl-degerlerini-dogru-ayarlamak-a-mx-cname-ve-txt-kayitlari-icin-stratejik-rehber\/'>DNS TTL de\u011ferlerini stratejik olarak ayarlad\u0131\u011f\u0131m\u0131z rehberimiz<\/a> de yol g\u00f6sterici olacakt\u0131r. B\u00f6ylece yaln\u0131zca bug\u00fcn i\u00e7in de\u011fil, yar\u0131n web sitenizi yay\u0131na ald\u0131\u011f\u0131n\u0131zda da sorun ya\u015famayaca\u011f\u0131n\u0131z, s\u00fcrd\u00fcr\u00fclebilir bir <strong>e\u2011posta odakl\u0131 hosting mimarisi<\/strong> kurmu\u015f olursunuz.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u0130&ccedil;indekiler1 Sadece E\u2011Posta \u0130\u00e7in Hosting Neden G\u00fcndeme Geliyor?2 Sadece E\u2011Posta \u0130\u00e7in Hosting Se\u00e7enekleri2.1 1) Payla\u015f\u0131ml\u0131 E\u2011Posta Hosting (Web Sitesiz Kullan\u0131m)2.2 2) DCHost VPS\/Dedicated \u00dczerinde Kendi Mail Sunucunuzu Kurmak2.3 3) Harici Kurumsal E\u2011Posta Servisi + DCHost DNS3 Web Sitesi Olmadan DNS Tasar\u0131m\u0131 Nas\u0131l Yap\u0131l\u0131r?4 Sadece E\u2011Posta \u0130\u00e7in Zorunlu ve \u00d6nerilen DNS Kay\u0131tlar\u01314.1 1) MX Kayd\u0131: E\u2011Postan\u0131n [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4176,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-4175","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji"],"_links":{"self":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/4175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/comments?post=4175"}],"version-history":[{"count":0,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/4175\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media\/4176"}],"wp:attachment":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media?parent=4175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/categories?post=4175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/tags?post=4175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}