{"id":2965,"date":"2025-12-05T19:42:59","date_gmt":"2025-12-05T16:42:59","guid":{"rendered":"https:\/\/www.dchost.com\/blog\/ptr-reverse-dns-kaydi-vps-ipniz-icin-dogru-ayar-ve-e-posta-teslimine-etkisi\/"},"modified":"2025-12-05T19:42:59","modified_gmt":"2025-12-05T16:42:59","slug":"ptr-reverse-dns-kaydi-vps-ipniz-icin-dogru-ayar-ve-e-posta-teslimine-etkisi","status":"publish","type":"post","link":"https:\/\/www.dchost.com\/blog\/ptr-reverse-dns-kaydi-vps-ipniz-icin-dogru-ayar-ve-e-posta-teslimine-etkisi\/","title":{"rendered":"PTR (Reverse DNS) Kayd\u0131: VPS IP\u2019niz \u0130\u00e7in Do\u011fru Ayar ve E\u2011Posta Teslimine Etkisi"},"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=\"#PTR_Reverse_DNS_Kaydi_Nedir_ve_Neden_Bu_Kadar_Konusuluyor\"><span class=\"toc_number toc_depth_1\">1<\/span> PTR (Reverse DNS) Kayd\u0131 Nedir ve Neden Bu Kadar Konu\u015fuluyor?<\/a><\/li><li><a href=\"#PTR_Reverse_DNS_Kaydi_Tam_Olarak_Nedir\"><span class=\"toc_number toc_depth_1\">2<\/span> PTR (Reverse DNS) Kayd\u0131 Tam Olarak Nedir?<\/a><ul><li><a href=\"#PTR_Kaydi_Nerede_Tutulur\"><span class=\"toc_number toc_depth_2\">2.1<\/span> PTR Kayd\u0131 Nerede Tutulur?<\/a><\/li><\/ul><\/li><li><a href=\"#Neden_Ozellikle_EPosta_Sunuculari_Icin_Kritik\"><span class=\"toc_number toc_depth_1\">3<\/span> Neden \u00d6zellikle E\u2011Posta Sunucular\u0131 \u0130\u00e7in Kritik?<\/a><ul><li><a href=\"#HELOEHLO_PTR_ve_Guven_Skoru\"><span class=\"toc_number toc_depth_2\">3.1<\/span> HELO\/EHLO, PTR ve G\u00fcven Skoru<\/a><\/li><li><a href=\"#Kara_Liste_RBL_ve_PTR_Iliskisi\"><span class=\"toc_number toc_depth_2\">3.2<\/span> Kara Liste (RBL) ve PTR \u0130li\u015fkisi<\/a><\/li><\/ul><\/li><li><a href=\"#PTR_Kaydi_DNS_Seviyesinde_Nasil_Calisir\"><span class=\"toc_number toc_depth_1\">4<\/span> PTR Kayd\u0131 DNS Seviyesinde Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/a><ul><li><a href=\"#IPv4_icin_Reverse_DNS_in-addrarpa\"><span class=\"toc_number toc_depth_2\">4.1<\/span> IPv4 i\u00e7in Reverse DNS (in-addr.arpa)<\/a><\/li><li><a href=\"#IPv6_icin_Reverse_DNS_ip6arpa\"><span class=\"toc_number toc_depth_2\">4.2<\/span> IPv6 i\u00e7in Reverse DNS (ip6.arpa)<\/a><\/li><li><a href=\"#Neden_PTRi_Kendi_DNS_Panelimde_Goremiyorum\"><span class=\"toc_number toc_depth_2\">4.3<\/span> Neden PTR\u2019\u0131 Kendi DNS Panelimde G\u00f6remiyorum?<\/a><\/li><\/ul><\/li><li><a href=\"#VPS_IPniz_Icin_PTR_Reverse_DNS_Nasil_Ayarlanir\"><span class=\"toc_number toc_depth_1\">5<\/span> VPS IP\u2019niz \u0130\u00e7in PTR (Reverse DNS) Nas\u0131l Ayarlan\u0131r?<\/a><ul><li><a href=\"#1_Adim_Kullanacaginiz_Hostnamei_Belirleyin\"><span class=\"toc_number toc_depth_2\">5.1<\/span> 1. Ad\u0131m: Kullanaca\u011f\u0131n\u0131z Hostname\u2019i Belirleyin<\/a><\/li><li><a href=\"#2_Adim_Once_A_ve_Gerekirse_AAAA_Kaydini_Olusturun\"><span class=\"toc_number toc_depth_2\">5.2<\/span> 2. Ad\u0131m: \u00d6nce A (ve Gerekirse AAAA) Kayd\u0131n\u0131 Olu\u015fturun<\/a><\/li><li><a href=\"#3_Adim_Mevcut_PTR_Kaydini_Kontrol_Edin\"><span class=\"toc_number toc_depth_2\">5.3<\/span> 3. Ad\u0131m: Mevcut PTR Kayd\u0131n\u0131 Kontrol Edin<\/a><ul><li><a href=\"#LinuxMac_Terminalinden\"><span class=\"toc_number toc_depth_3\">5.3.1<\/span> Linux\/Mac Terminalinden:<\/a><\/li><li><a href=\"#Windows_Komut_Satirindan\"><span class=\"toc_number toc_depth_3\">5.3.2<\/span> Windows Komut Sat\u0131r\u0131ndan:<\/a><\/li><\/ul><\/li><li><a href=\"#4_Adim_PTR_Guncelleme_Talebi_veya_Panel_Uzerinden_Ayar\"><span class=\"toc_number toc_depth_2\">5.4<\/span> 4. Ad\u0131m: PTR G\u00fcncelleme Talebi veya Panel \u00dczerinden Ayar<\/a><\/li><li><a href=\"#5_Adim_Dogrulama_ve_Testler\"><span class=\"toc_number toc_depth_2\">5.5<\/span> 5. Ad\u0131m: Do\u011frulama ve Testler<\/a><\/li><\/ul><\/li><li><a href=\"#Dogru_PTR_Tasarimi_En_Iyi_Uygulamalar\"><span class=\"toc_number toc_depth_1\">6<\/span> Do\u011fru PTR Tasar\u0131m\u0131: En \u0130yi Uygulamalar<\/a><ul><li><a href=\"#1_IP_Basina_Tek_PTR_Kullanin\"><span class=\"toc_number toc_depth_2\">6.1<\/span> 1. IP Ba\u015f\u0131na Tek PTR Kullan\u0131n<\/a><\/li><li><a href=\"#2_Hostname_Mantikli_ve_Kurumsal_Gorunsun\"><span class=\"toc_number toc_depth_2\">6.2<\/span> 2. Hostname Mant\u0131kl\u0131 ve Kurumsal G\u00f6r\u00fcns\u00fcn<\/a><\/li><li><a href=\"#3_FCrDNS_Forward_Confirmed_reverse_DNS_Saglayin\"><span class=\"toc_number toc_depth_2\">6.3<\/span> 3. FCrDNS (Forward Confirmed reverse DNS) Sa\u011flay\u0131n<\/a><\/li><li><a href=\"#4_SPF_DKIM_ve_DMARC_ile_Birlikte_Dusunun\"><span class=\"toc_number toc_depth_2\">6.4<\/span> 4. SPF, DKIM ve DMARC ile Birlikte D\u00fc\u015f\u00fcn\u00fcn<\/a><\/li><li><a href=\"#5_Yuksek_Hacimli_Gonderimlerde_IP_Isitma_ve_Ayri_IPler\"><span class=\"toc_number toc_depth_2\">6.5<\/span> 5. Y\u00fcksek Hacimli G\u00f6nderimlerde IP Is\u0131tma ve Ayr\u0131 IP\u2019ler<\/a><\/li><\/ul><\/li><li><a href=\"#Sik_Yapilan_Hatalar_ve_Sorun_Giderme\"><span class=\"toc_number toc_depth_1\">7<\/span> S\u0131k Yap\u0131lan Hatalar ve Sorun Giderme<\/a><ul><li><a href=\"#1_PTR_Var_Ama_Forward_DNS_Yok_veya_Yanlis\"><span class=\"toc_number toc_depth_2\">7.1<\/span> 1. PTR Var Ama Forward DNS Yok veya Yanl\u0131\u015f<\/a><\/li><li><a href=\"#2_Dinamik_Gorunumlu_PTR_Kullanmak\"><span class=\"toc_number toc_depth_2\">7.2<\/span> 2. Dinamik G\u00f6r\u00fcn\u00fcml\u00fc PTR Kullanmak<\/a><\/li><li><a href=\"#3_Bir_IP_Icin_Birden_Fazla_PTR_Talep_Etmek\"><span class=\"toc_number toc_depth_2\">7.3<\/span> 3. Bir IP \u0130\u00e7in Birden Fazla PTR Talep Etmek<\/a><\/li><li><a href=\"#4_PTR_Dogru_Ama_SPFDKIMDMARC_Eksik\"><span class=\"toc_number toc_depth_2\">7.4<\/span> 4. PTR Do\u011fru Ama SPF\/DKIM\/DMARC Eksik<\/a><\/li><li><a href=\"#5_IPv6_PTRlarini_Unutmak\"><span class=\"toc_number toc_depth_2\">7.5<\/span> 5. IPv6 PTR\u2019lar\u0131n\u0131 Unutmak<\/a><\/li><\/ul><\/li><li><a href=\"#DCHost_Altyapisinda_PTR_Yonetimi_ve_Onerilen_Senaryolar\"><span class=\"toc_number toc_depth_1\">8<\/span> DCHost Altyap\u0131s\u0131nda PTR Y\u00f6netimi ve \u00d6nerilen Senaryolar<\/a><\/li><li><a href=\"#Ozet_ve_Son_Adim_PTRsiz_Mail_Altyapisi_Artik_Gecmiste_Kaldi\"><span class=\"toc_number toc_depth_1\">9<\/span> \u00d6zet ve Son Ad\u0131m: PTR\u2019s\u0131z Mail Altyap\u0131s\u0131 Art\u0131k Ge\u00e7mi\u015fte Kald\u0131<\/a><\/li><\/ul><\/div>\n<h2><span id=\"PTR_Reverse_DNS_Kaydi_Nedir_ve_Neden_Bu_Kadar_Konusuluyor\">PTR (Reverse DNS) Kayd\u0131 Nedir ve Neden Bu Kadar Konu\u015fuluyor?<\/span><\/h2>\n<p>VPS veya dedicated bir sunucuda kendi e\u2011posta altyap\u0131n\u0131z\u0131 kurdu\u011funuz anda ilk kar\u015f\u0131la\u015ft\u0131\u011f\u0131n\u0131z duvarlardan biri \u201crDNS \/ PTR kayd\u0131n\u0131z yok\u201d uyar\u0131s\u0131 oluyor. \u00d6zellikle Gmail, Outlook, kurumsal mail sunucular\u0131 gibi b\u00fcy\u00fck al\u0131c\u0131lar, sizden gelen her ba\u011flant\u0131da IP\u2019nizin tam tersine (reverse) bakarak hangi alan ad\u0131na ait oldu\u011funu kontrol ediyor. \u0130\u015fte bu ters y\u00f6nl\u00fc \u00e7\u00f6z\u00fcmleme <strong>PTR (Pointer) kayd\u0131<\/strong> ile \u00e7al\u0131\u015f\u0131yor.<\/p>\n<p>Basit\u00e7e: Normal DNS\u2019te bir alan ad\u0131n\u0131 (\u00f6rne\u011fin <code>mail.ornek.com<\/code>) IP\u2019ye \u00e7evirirsiniz. PTR ise bunun tam tersini yapar; IP adresinden alan ad\u0131na gider. E\u2011posta taraf\u0131nda bu k\u00fc\u00e7\u00fck gibi g\u00f6r\u00fcnen detay, blackliste d\u00fc\u015f\u00fcp d\u00fc\u015fmemeniz, iletilerinizin SPAM klas\u00f6r\u00fcne mi yoksa Gelen Kutusu\u2019na m\u0131 gidece\u011fi \u00fczerinde ciddi etkiye sahiptir.<\/p>\n<p>Bu yaz\u0131da, PTR (reverse DNS) kayd\u0131n\u0131n tam olarak ne oldu\u011funu, DNS seviyesinde nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, <a href=\"https:\/\/www.dchost.com\/tr\/vps\">VPS<\/a> IP\u2019niz i\u00e7in ad\u0131m ad\u0131m nas\u0131l ayarlaman\u0131z gerekti\u011fini ve e\u2011posta teslim edilebilirli\u011fi \u00fczerindeki etkisini sahadan \u00f6rneklerle anlataca\u011f\u0131m. Ayr\u0131ca DCHost altyap\u0131s\u0131nda PTR y\u00f6netimini nas\u0131l ele ald\u0131\u011f\u0131m\u0131z\u0131 ve s\u0131k yap\u0131lan hatalar\u0131 nas\u0131l \u00f6nleyebilece\u011finizi de payla\u015faca\u011f\u0131m.<\/p>\n<h2><span id=\"PTR_Reverse_DNS_Kaydi_Tam_Olarak_Nedir\">PTR (Reverse DNS) Kayd\u0131 Tam Olarak Nedir?<\/span><\/h2>\n<p>PTR kayd\u0131, bir IP adresinin hangi hostname\u2019e (alan ad\u0131na) i\u015faret etti\u011fini s\u00f6yleyen DNS kay\u0131t t\u00fcr\u00fcd\u00fcr. Forward DNS\u2019te <code>A<\/code> ve <code>AAAA<\/code> kay\u0131tlar\u0131 alan ad\u0131 \u2192 IP ili\u015fkisini tutarken, PTR bu ili\u015fkiyi IP \u2192 alan ad\u0131 y\u00f6n\u00fcnde tutar. Bu y\u00fczden PTR kay\u0131tlar\u0131 genellikle \u201creverse DNS\u201d, \u201crDNS\u201d veya \u201cters DNS\u201d olarak da an\u0131l\u0131r.<\/p>\n<p>\u00d6rnek bir ili\u015fki \u015f\u00f6yle g\u00f6r\u00fcn\u00fcr:<\/p>\n<ul>\n<li><strong>Forward DNS:<\/strong> <code>mail.ornek.com \u2192 203.0.113.10<\/code> (A kayd\u0131)<\/li>\n<li><strong>Reverse DNS (PTR):<\/strong> <code>203.0.113.10 \u2192 mail.ornek.com<\/code> (PTR kayd\u0131)<\/li>\n<\/ul>\n<p>E\u011fer bu ili\u015fki iki y\u00f6nl\u00fc do\u011fru bir \u015fekilde kurulmu\u015fsa, buna genellikle <strong>FCrDNS (Forward Confirmed reverse DNS)<\/strong> denir. Bir\u00e7ok spam filtresi ve kara liste servisi, IP\u2019nizi de\u011ferlendirirken bu iki y\u00f6nl\u00fc e\u015fle\u015fmeyi kontrol eder.<\/p>\n<h3><span id=\"PTR_Kaydi_Nerede_Tutulur\">PTR Kayd\u0131 Nerede Tutulur?<\/span><\/h3>\n<p>\u00d6nemli bir nokta: PTR kayd\u0131, normalde alan ad\u0131n\u0131z\u0131n DNS b\u00f6lgesinde de\u011fil, IP bloklar\u0131n\u0131n y\u00f6netildi\u011fi \u00f6zel reverse DNS b\u00f6lgelerinde tutulur. \u00d6rne\u011fin:<\/p>\n<ul>\n<li>IPv4 i\u00e7in: <code>in-addr.arpa<\/code> alan\u0131 (\u00f6rne\u011fin <code>10.113.0.203.in-addr.arpa<\/code>)<\/li>\n<li>IPv6 i\u00e7in: <code>ip6.arpa<\/code> alan\u0131 (uzun, heksadesimal ve ters yaz\u0131lm\u0131\u015f haliyle)<\/li>\n<\/ul>\n<p>Bu reverse DNS b\u00f6lgeleri genellikle IP\u2019leri tahsis eden operat\u00f6r veya hosting sa\u011flay\u0131c\u0131 taraf\u0131ndan y\u00f6netilir. Yani <strong>PTR kayd\u0131n\u0131 \u00e7o\u011fu zaman do\u011frudan kendi DNS panelinizden ekleyemezsiniz<\/strong>; IP\u2019yi ald\u0131\u011f\u0131n\u0131z sa\u011flay\u0131c\u0131dan talep etmeniz veya sa\u011flay\u0131c\u0131n\u0131z\u0131n sundu\u011fu \u00f6zel rDNS aray\u00fcz\u00fcn\u00fc kullanman\u0131z gerekir.<\/p>\n<h2><span id=\"Neden_Ozellikle_EPosta_Sunuculari_Icin_Kritik\">Neden \u00d6zellikle E\u2011Posta Sunucular\u0131 \u0130\u00e7in Kritik?<\/span><\/h2>\n<p>Web trafi\u011finde PTR kayd\u0131n\u0131z olmasa da siteniz genelde \u00e7al\u0131\u015f\u0131r. Ancak s\u00f6z konusu SMTP, yani e\u2011posta trafi\u011fi oldu\u011funda i\u015fler de\u011fi\u015fir. Modern spam filtreleri, sizden gelen ba\u011flant\u0131y\u0131 de\u011ferlendirirken bir dizi sinyal toplar:<\/p>\n<ul>\n<li>IP\u2019nizin PTR kayd\u0131 var m\u0131?<\/li>\n<li>PTR kayd\u0131ndaki hostname ge\u00e7erli bir alan ad\u0131na m\u0131 i\u015faret ediyor?<\/li>\n<li>Bu hostname tekrar \u00e7\u00f6z\u00fcld\u00fc\u011f\u00fcnde (forward DNS) ayn\u0131 IP\u2019ye d\u00f6n\u00fcyor mu?<\/li>\n<li>PTR kayd\u0131n\u0131z \u201cdynamic-203-0-113-10.isp.net\u201d gibi dinamik\/ev tipi g\u00f6r\u00fcn\u00fcyor mu, yoksa \u201cmail.ornek.com\u201d gibi kurumsal m\u0131?<\/li>\n<\/ul>\n<p>\u00d6zellikle Gmail ve b\u00fcy\u00fck sa\u011flay\u0131c\u0131lar; SPF, DKIM, DMARC gibi mekanizmalarla birlikte PTR\u2019\u0131 da scoring\u2019e dahil eder. Bu konuda daha geni\u015f \u00e7er\u00e7eveyi g\u00f6rmek i\u00e7in <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 e\u2011posta teslim edilebilirli\u011fini ad\u0131m ad\u0131m y\u00fckseltme rehberimize<\/a> mutlaka g\u00f6z atman\u0131z\u0131 \u00f6neririm.<\/p>\n<h3><span id=\"HELOEHLO_PTR_ve_Guven_Skoru\">HELO\/EHLO, PTR ve G\u00fcven Skoru<\/span><\/h3>\n<p>SMTP oturumu ba\u015flad\u0131\u011f\u0131nda sunucunuz kar\u015f\u0131 tarafa bir <code>HELO<\/code> veya <code>EHLO<\/code> hostname\u2019i bildirir. \u00d6rne\u011fin:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">EHLO mail.ornek.com\n<\/code><\/pre>\n<p>Al\u0131c\u0131 sunucu genellikle \u015fu ad\u0131mlar\u0131 uygular:<\/p>\n<ol>\n<li>Ba\u011flanan IP adresinin PTR kayd\u0131n\u0131 sorgular.<\/li>\n<li>PTR\u2019dan \u00e7\u0131kan hostname ile <code>EHLO<\/code>\u2019da verdi\u011finiz hostname uyu\u015fuyor mu diye bakar.<\/li>\n<li>Bu hostname i\u00e7in A\/AAAA kayd\u0131 var m\u0131, IP tekrar ayn\u0131 adrese d\u00f6n\u00fcyor mu (FCrDNS kontrol\u00fc)?<\/li>\n<\/ol>\n<p>E\u011fer PTR kayd\u0131 yoksa, PTR ba\u015fka bir alana i\u015faret ediyorsa veya HELO ismiyle ilgisizse, spam skorunuz y\u00fckselmeye ba\u015flar. Bu tek ba\u015f\u0131na red sebebi olmayabilir, ancak zaten s\u0131n\u0131rda olan bir IP\u2019de barda\u011f\u0131 ta\u015f\u0131ran son damla olabilir.<\/p>\n<h3><span id=\"Kara_Liste_RBL_ve_PTR_Iliskisi\">Kara Liste (RBL) ve PTR \u0130li\u015fkisi<\/span><\/h3>\n<p>Pek \u00e7ok RBL (Realtime Blackhole List) ve itibar servisi; dinamik IP bloklar\u0131, ev kullan\u0131c\u0131lar\u0131 ve k\u00f6t\u00fc yap\u0131land\u0131r\u0131lm\u0131\u015f sunucular\u0131 tespit ederken PTR kay\u0131tlar\u0131ndan yararlan\u0131r. \u00d6rne\u011fin:<\/p>\n<ul>\n<li>PTR kayd\u0131 <code>adsl-*<\/code>, <code>dialup-*<\/code>, <code>dynamic-*<\/code> gibi prefiksler i\u00e7eriyorsa<\/li>\n<li>Hostname anlams\u0131z, rastgele ve hi\u00e7bir alan ad\u0131yla ili\u015fkilendirilmemi\u015fse<\/li>\n<\/ul>\n<p>Bu t\u00fcr IP\u2019ler \u201csunucu de\u011fil, istemci\u201d olarak etiketlenir ve do\u011frudan mail g\u00f6ndermesi istenmez. Dolay\u0131s\u0131yla kendi mail sunucunuzu kuruyorsan\u0131z, IP\u2019nize mutlaka mail\u2019e uygun, kurumsal g\u00f6r\u00fcn\u00fcml\u00fc bir PTR ataman\u0131z gerekir.<\/p>\n<h2><span id=\"PTR_Kaydi_DNS_Seviyesinde_Nasil_Calisir\">PTR Kayd\u0131 DNS Seviyesinde Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/span><\/h2>\n<p>PTR\u2019\u0131n nas\u0131l ayarlanaca\u011f\u0131n\u0131 anlatmadan \u00f6nce, mant\u0131\u011f\u0131n\u0131 netle\u015ftirmek i\u015fi \u00e7ok kolayla\u015ft\u0131r\u0131yor. Forward DNS taraf\u0131n\u0131 zaten biliyorsunuz; alan ad\u0131 sizin DNS\u2019nizde, A\/AAAA kay\u0131tlar\u0131n\u0131 siz y\u00f6netiyorsunuz. Reverse tarafta ise top \u00e7o\u011fu zaman IP sa\u011flay\u0131c\u0131s\u0131nda.<\/p>\n<h3><span id=\"IPv4_icin_Reverse_DNS_in-addrarpa\">IPv4 i\u00e7in Reverse DNS (in-addr.arpa)<\/span><\/h3>\n<p>IPv4 adresleri i\u00e7in reverse DNS; IP\u2019nin oktetlerinin ters yaz\u0131ld\u0131\u011f\u0131 bir yap\u0131da tutulur. \u00d6rnek IP\u2019yi ele alal\u0131m:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">203.0.113.10\n<\/code><\/pre>\n<p>Bu IP\u2019nin reverse DNS alan\u0131 \u015f\u00f6yle g\u00f6r\u00fcn\u00fcr:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">10.113.0.203.in-addr.arpa\n<\/code><\/pre>\n<p>Bu zone\u2019un yetkili DNS sunucular\u0131, IP blo\u011funu elinde tutan operat\u00f6r veya hosting sa\u011flay\u0131c\u0131d\u0131r. Zone i\u00e7inde \u015f\u00f6yle bir PTR kayd\u0131 yer al\u0131r:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">10.113.0.203.in-addr.arpa.  3600  IN  PTR  mail.ornek.com.\n<\/code><\/pre>\n<h3><span id=\"IPv6_icin_Reverse_DNS_ip6arpa\">IPv6 i\u00e7in Reverse DNS (ip6.arpa)<\/span><\/h3>\n<p>IPv6\u2019da yap\u0131 daha uzundur ama mant\u0131k ayn\u0131d\u0131r. \u00d6rne\u011fin:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">2001:db8:abcd:0012::1\n<\/code><\/pre>\n<p>Reverse formu, her heksadesimal hanenin ters \u00e7evrilmi\u015f haliyle <code>ip6.arpa<\/code> alt\u0131nda tutulur. \u0130yi haber \u015fu ki, bug\u00fcn pek \u00e7ok sa\u011flay\u0131c\u0131 IPv6 PTR\u2019lar\u0131n\u0131 da panel \u00fczerinden y\u00f6netmenize izin veriyor. IPv6 e\u2011posta teslimiyle ilgili daha derin bir bak\u0131\u015f i\u00e7in <a href=\"https:\/\/www.dchost.com\/blog\/ipv6-ile-e%e2%80%91posta-teslimi-nasil-rayina-oturur-ptr-helo-spf-ve-rbllerle-saha-rehberi\/\">IPv6 ile e\u2011posta teslimi, PTR, HELO, SPF ve RBL\u2019ler rehberimizi<\/a> inceleyebilirsiniz.<\/p>\n<h3><span id=\"Neden_PTRi_Kendi_DNS_Panelimde_Goremiyorum\">Neden PTR\u2019\u0131 Kendi DNS Panelimde G\u00f6remiyorum?<\/span><\/h3>\n<p>\u00c7\u00fcnk\u00fc alan ad\u0131n\u0131n sahibi siz olsan\u0131z da, IP blo\u011funun sahibi genellikle hosting sa\u011flay\u0131c\u0131n\u0131zd\u0131r. Alan ad\u0131yla ilgili kay\u0131tlar (A, AAAA, MX, TXT, CNAME vs.) sizin DNS b\u00f6lgenizde tutulur. Ancak PTR kay\u0131tlar\u0131 IP blo\u011funu y\u00f6neten kurumun reverse DNS b\u00f6lgelerinde saklan\u0131r. Dolay\u0131s\u0131yla:<\/p>\n<ul>\n<li>A kayd\u0131n\u0131z\u0131 <strong>siz<\/strong> y\u00f6netirsiniz.<\/li>\n<li>PTR kayd\u0131n\u0131z\u0131 \u00e7o\u011fu zaman <strong>sa\u011flay\u0131c\u0131<\/strong> y\u00f6netir, siz talep edersiniz.<\/li>\n<\/ul>\n<p>Bu ayr\u0131m\u0131 bilmek, hem do\u011fru yerden i\u015f istemek hem de hatalar\u0131 daha h\u0131zl\u0131 te\u015fhis etmek i\u00e7in \u00e7ok \u00f6nemlidir. E\u011fer DNS kay\u0131t tiplerine genel bir bak\u0131\u015fa ihtiyac\u0131n\u0131z varsa, <a href=\"https:\/\/www.dchost.com\/blog\/dns-kayitlari-nedir-a-aaaa-cname-mx-txt-ve-srv-rehberi\/\">DNS kay\u0131tlar\u0131 A\u2019dan Z\u2019ye rehberimize<\/a> de g\u00f6z atabilirsiniz.<\/p>\n<h2><span id=\"VPS_IPniz_Icin_PTR_Reverse_DNS_Nasil_Ayarlanir\">VPS IP\u2019niz \u0130\u00e7in PTR (Reverse DNS) Nas\u0131l Ayarlan\u0131r?<\/span><\/h2>\n<p>\u015eimdi prati\u011fe ge\u00e7elim. Elinizde DCHost \u00fczerinde \u00e7al\u0131\u015fan bir VPS veya <a href=\"https:\/\/www.dchost.com\/tr\/fiziksel-sunucu\">dedicated sunucu<\/a> oldu\u011funu varsayal\u0131m ve bu sunucudan <code>mail.ornek.com<\/code> alan ad\u0131yla e\u2011posta g\u00f6ndermek istiyorsunuz. \u0130zlemeniz gereken ad\u0131mlar genel olarak \u015f\u00f6yledir:<\/p>\n<h3><span id=\"1_Adim_Kullanacaginiz_Hostnamei_Belirleyin\">1. Ad\u0131m: Kullanaca\u011f\u0131n\u0131z Hostname\u2019i Belirleyin<\/span><\/h3>\n<p>\u0130lk ad\u0131mda, IP\u2019nize atanacak hostname\u2019e karar vermelisiniz. En yayg\u0131n tercih:<\/p>\n<ul>\n<li><code>mail.ornek.com<\/code><\/li>\n<li>veya <code>smtp.ornek.com<\/code><\/li>\n<\/ul>\n<p>Baz\u0131 senaryolarda <code>server1.ornek.com<\/code> gibi daha genel bir isim de kullanabilirsiniz, ancak e\u2011posta taraf\u0131nda <code>mail.<\/code> veya <code>smtp.<\/code> prefiksli hostnameler, spam filtreleri g\u00f6z\u00fcnde daha \u201cal\u0131\u015f\u0131ld\u0131k\u201d g\u00f6r\u00fcn\u00fcr.<\/p>\n<p>Ayr\u0131ca bu hostname\u2019i, sunucunuzun sistem hostname\u2019i (Linux\u2019ta <code>hostnamectl<\/code> \u00e7\u0131kt\u0131s\u0131 vb.) olarak da tan\u0131mlaman\u0131z tavsiye edilir. B\u00f6ylece Postfix\/Exim gibi MTA\u2019lar HELO\/EHLO s\u0131ras\u0131nda bu ismi kullanacakt\u0131r.<\/p>\n<h3><span id=\"2_Adim_Once_A_ve_Gerekirse_AAAA_Kaydini_Olusturun\">2. Ad\u0131m: \u00d6nce A (ve Gerekirse AAAA) Kayd\u0131n\u0131 Olu\u015fturun<\/span><\/h3>\n<p>Pek \u00e7ok sa\u011flay\u0131c\u0131, PTR kayd\u0131n\u0131 tan\u0131mlamadan \u00f6nce hostname\u2019in forward DNS\u2019inin (A\/AAAA) zaten do\u011fru \u015fekilde IP\u2019ye i\u015faret etmesini \u015fart ko\u015far. Bu y\u00fczden:<\/p>\n<ul>\n<li><code>mail.ornek.com<\/code> i\u00e7in bir <strong>A kayd\u0131<\/strong> olu\u015fturun ve VPS IP\u2019nize y\u00f6nlendirin.<\/li>\n<li>IPv6 kullan\u0131yorsan\u0131z, ayn\u0131 hostname i\u00e7in bir <strong>AAAA kayd\u0131<\/strong> da ekleyin.<\/li>\n<\/ul>\n<p>Bu ad\u0131m\u0131 atlaman\u0131z durumunda, reverse DNS yap\u0131lsa bile FCrDNS sa\u011flanamad\u0131\u011f\u0131 i\u00e7in baz\u0131 al\u0131c\u0131lar yine sorun \u00e7\u0131karabilir. Bu ili\u015fkiyi do\u011fru kurmak, ileride SPF, DKIM, DMARC gibi di\u011fer ayarlarda da i\u015finizi kolayla\u015ft\u0131r\u0131r. Detayl\u0131 bir kimlik do\u011frulama kurulumu i\u00e7in <a href=\"https:\/\/www.dchost.com\/blog\/spf-dkim-ve-dmarc-nedir-ozel-alan-adi-ile-e-posta-dogrulamasini-cpanel-ve-vpste-sifirdan-kurmak\/\">SPF, DKIM ve DMARC yap\u0131land\u0131rma rehberimize<\/a> g\u00f6z atabilirsiniz.<\/p>\n<h3><span id=\"3_Adim_Mevcut_PTR_Kaydini_Kontrol_Edin\">3. Ad\u0131m: Mevcut PTR Kayd\u0131n\u0131 Kontrol Edin<\/span><\/h3>\n<p>PTR ayar\u0131n\u0131za ba\u015flamadan \u00f6nce IP\u2019nizde halihaz\u0131rda ne oldu\u011funu g\u00f6rmeniz iyi olur. Bunu birka\u00e7 y\u00f6ntemle test edebilirsiniz:<\/p>\n<h4><span id=\"LinuxMac_Terminalinden\">Linux\/Mac Terminalinden:<\/span><\/h4>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">dig -x 203.0.113.10 +short\n\n# veya\n\nnslookup 203.0.113.10\n<\/code><\/pre>\n<p>E\u011fer \u00e7\u0131kt\u0131 bo\u015fsa, b\u00fcy\u00fck ihtimalle PTR tan\u0131ml\u0131 de\u011fildir. E\u011fer \u015f\u00f6yle bir \u015fey g\u00f6r\u00fcyorsan\u0131z:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">203-0-113-10.dchost.net.\n<\/code><\/pre>\n<p>Bu, sa\u011flay\u0131c\u0131n\u0131n verdi\u011fi varsay\u0131lan PTR olabilir. Kendi alan ad\u0131n\u0131za uyacak \u015fekilde g\u00fcncellenmesi gerekir.<\/p>\n<h4><span id=\"Windows_Komut_Satirindan\">Windows Komut Sat\u0131r\u0131ndan:<\/span><\/h4>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">nslookup 203.0.113.10\n<\/code><\/pre>\n<p>Sonu\u00e7 b\u00f6l\u00fcm\u00fcnde &#8220;Name&#8221; sat\u0131r\u0131nda g\u00f6rd\u00fc\u011f\u00fcn\u00fcz hostname, mevcut PTR kayd\u0131n\u0131 g\u00f6sterir.<\/p>\n<h3><span id=\"4_Adim_PTR_Guncelleme_Talebi_veya_Panel_Uzerinden_Ayar\">4. Ad\u0131m: PTR G\u00fcncelleme Talebi veya Panel \u00dczerinden Ayar<\/span><\/h3>\n<p>Burada s\u00fcre\u00e7, kulland\u0131\u011f\u0131n\u0131z sa\u011flay\u0131c\u0131n\u0131n sundu\u011fu aray\u00fcze g\u00f6re de\u011fi\u015fir. DCHost \u00f6zelinde tipik senaryolar \u015f\u00f6yle:<\/p>\n<ul>\n<li><strong>VPS ve dedicated sunucularda:<\/strong> M\u00fc\u015fteri panelinizde IP y\u00f6netimi sayfas\u0131ndan ilgili IP i\u00e7in PTR\/Reverse DNS alan\u0131na hostname\u2019i girersiniz. Biz altyap\u0131da ilgili reverse DNS b\u00f6lgesini sizin yerinize g\u00fcncelleriz.<\/li>\n<li><strong>Colocation:<\/strong> IP bloklar\u0131 DCHost \u00fczerinden tahsis ediliyorsa, reverse DNS delegasyonunu size devredebilir veya PTR taleplerinizi operasyon ekibimiz \u00fczerinden y\u00f6netebiliriz.<\/li>\n<\/ul>\n<p>PTR talebinde bulunurken mutlaka \u015funlar\u0131 net yaz\u0131n:<\/p>\n<ul>\n<li>Hangi IP i\u00e7in PTR istedi\u011finiz (IPv4 ve\/veya IPv6)<\/li>\n<li>Hangi hostname\u2019e i\u015faret etmesini istedi\u011finiz (\u00f6rn. <code>mail.ornek.com<\/code>)<\/li>\n<\/ul>\n<p>Baz\u0131 sa\u011flay\u0131c\u0131larda bu i\u015flem an\u0131nda devreye girerken, baz\u0131lar\u0131nda birka\u00e7 dakika i\u00e7inde DNS\u2019e yans\u0131r. TTL s\u00fcresine ba\u011fl\u0131 olarak internet genelinde yay\u0131lmas\u0131 ise genelde 1\u20134 saat s\u00fcrer.<\/p>\n<h3><span id=\"5_Adim_Dogrulama_ve_Testler\">5. Ad\u0131m: Do\u011frulama ve Testler<\/span><\/h3>\n<p>PTR g\u00fcncellemesi yap\u0131ld\u0131ktan sonra mutlaka do\u011frulama yap\u0131n:<\/p>\n<ol>\n<li><strong>Reverse kontrol:<\/strong> <code>dig -x IP +short<\/code> \u00e7al\u0131\u015ft\u0131r\u0131n, <code>mail.ornek.com.<\/code> \u00e7\u0131kt\u0131s\u0131n\u0131 g\u00f6r\u00fcn.<\/li>\n<li><strong>Forward kontrol:<\/strong> <code>dig mail.ornek.com A +short<\/code> ve varsa <code>AAAA<\/code> sorgusuyla IP\u2019ye geri d\u00f6nd\u00fc\u011f\u00fcn\u00fczden emin olun.<\/li>\n<li><strong>E\u2011posta testi:<\/strong> Sunucudan Gmail\/Outlook gibi servislere test maili at\u0131n ve ham header\u2019larda &#8220;Received:&#8221; sat\u0131rlar\u0131n\u0131, HELO ismini ve IP\/PTR\/hostname tutarl\u0131l\u0131\u011f\u0131n\u0131 inceleyin.<\/li>\n<\/ol>\n<p>E\u011fer kendi mail sunucunuzu s\u0131f\u0131rdan kuruyorsan\u0131z, <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 Postfix + Dovecot + rspamd ile e\u2011posta sunucusu kurulum rehberimizde<\/a> PTR, SPF, DKIM ve IP \u0131s\u0131tma (warming) s\u00fcre\u00e7lerini u\u00e7tan uca bir senaryo i\u00e7inde bulabilirsiniz.<\/p>\n<h2><span id=\"Dogru_PTR_Tasarimi_En_Iyi_Uygulamalar\">Do\u011fru PTR Tasar\u0131m\u0131: En \u0130yi Uygulamalar<\/span><\/h2>\n<p>Teknik olarak PTR kayd\u0131n\u0131 \u201cbir \u015fekilde\u201d ayarlamak kolay. Ancak i\u015fin p\u00fcf noktas\u0131, spam filtreleri ve itibar servisleri g\u00f6z\u00fcnde <strong>makul ve tutarl\u0131<\/strong> bir kimlik olu\u015fturmak. Saha deneyiminde i\u015fe yarayan baz\u0131 pratik tavsiyeler \u015f\u00f6yle:<\/p>\n<h3><span id=\"1_IP_Basina_Tek_PTR_Kullanin\">1. IP Ba\u015f\u0131na Tek PTR Kullan\u0131n<\/span><\/h3>\n<p>DNS standard\u0131 teoride bir IP i\u00e7in birden fazla PTR\u2019ye izin verse de, pratikte bu tavsiye edilmez. Bir\u00e7ok al\u0131c\u0131 ve test arac\u0131, ilk d\u00f6nen PTR\u2019\u0131 baz al\u0131r, di\u011ferlerini yok sayar. Bu da kar\u0131\u015f\u0131kl\u0131\u011fa yol a\u00e7ar. Bu y\u00fczden:<\/p>\n<ul>\n<li>Her IP i\u00e7in <strong>tek PTR<\/strong> belirleyin.<\/li>\n<li>Farkl\u0131 domain\u2019ler i\u00e7in mail g\u00f6nderecekseniz, genellikle hepsini ayn\u0131 hostname \u00fczerinden (\u00f6rne\u011fin <code>mail.ornek.com<\/code>) g\u00f6nderebilirsiniz.<\/li>\n<\/ul>\n<h3><span id=\"2_Hostname_Mantikli_ve_Kurumsal_Gorunsun\">2. Hostname Mant\u0131kl\u0131 ve Kurumsal G\u00f6r\u00fcns\u00fcn<\/span><\/h3>\n<p>PTR\u2019da kullan\u0131lacak hostname m\u00fcmk\u00fcn oldu\u011funca:<\/p>\n<ul>\n<li>Okunabilir ve anlaml\u0131 olsun (<code>mail.ornek.com<\/code>, <code>smtp1.ornek.com<\/code> vb.).<\/li>\n<li>Ger\u00e7ekten size ait bir alan ad\u0131 olsun (Whois bilgileri, SPF kayd\u0131, web sitesiyle tutarl\u0131).<\/li>\n<li>Forward DNS\u2019i d\u00fczg\u00fcn yap\u0131land\u0131r\u0131lm\u0131\u015f olsun (A\/AAAA, MX vb.).<\/li>\n<\/ul>\n<p>Bu sayede spam filtreleri, IP + PTR + alan ad\u0131 \u00fc\u00e7l\u00fcs\u00fcn\u00fc daha g\u00fcvenilir g\u00f6r\u00fcr.<\/p>\n<h3><span id=\"3_FCrDNS_Forward_Confirmed_reverse_DNS_Saglayin\">3. FCrDNS (Forward Confirmed reverse DNS) Sa\u011flay\u0131n<\/span><\/h3>\n<p>Etkin bir e\u2011posta kimli\u011fi i\u00e7in \u015fu \u00fc\u00e7l\u00fc mutlaka uyumlu olmal\u0131:<\/p>\n<ul>\n<li><strong>PTR:<\/strong> <code>IP \u2192 mail.ornek.com<\/code><\/li>\n<li><strong>A\/AAAA:<\/strong> <code>mail.ornek.com \u2192 IP<\/code><\/li>\n<li><strong>HELO\/EHLO:<\/strong> <code>mail.ornek.com<\/code><\/li>\n<\/ul>\n<p>Bu \u00fc\u00e7l\u00fc aras\u0131nda tutars\u0131zl\u0131k varsa (\u00f6rne\u011fin HELO <code>server.ornek.com<\/code> ama PTR <code>mail.ornek.com<\/code> ise), baz\u0131 al\u0131c\u0131lar uyar\u0131 veya puan kesintisi uygulayabilir.<\/p>\n<h3><span id=\"4_SPF_DKIM_ve_DMARC_ile_Birlikte_Dusunun\">4. SPF, DKIM ve DMARC ile Birlikte D\u00fc\u015f\u00fcn\u00fcn<\/span><\/h3>\n<p>PTR tek ba\u015f\u0131na mucize yaratmaz; SPF, DKIM ve DMARC ile birlikte anlam kazan\u0131r. \u0130deal senaryoda:<\/p>\n<ul>\n<li>SPF kayd\u0131n\u0131zda, g\u00f6nderen IP veya hostname yetkilendirilmi\u015f olmal\u0131.<\/li>\n<li>DKIM anahtar\u0131n\u0131z DNS\u2019te yay\u0131nlanm\u0131\u015f, imzalar\u0131n\u0131z ge\u00e7erli olmal\u0131.<\/li>\n<li>DMARC kayd\u0131n\u0131z; SPF ve\/veya DKIM ile uyumlu (alignment) sa\u011flamal\u0131.<\/li>\n<\/ul>\n<p>Tamam\u0131n\u0131 tek seferde u\u00e7tan uca kurgulamak i\u00e7in <a href=\"https:\/\/www.dchost.com\/blog\/spf-dkim-dmarc-ve-rdns-ile-e-posta-teslim-edilebilirligini-nasil-adim-adim-yukseltirsin\/\">e\u2011posta teslim edilebilirli\u011fini ad\u0131m ad\u0131m y\u00fckseltme rehberimiz<\/a> iyi bir referans olacakt\u0131r.<\/p>\n<h3><span id=\"5_Yuksek_Hacimli_Gonderimlerde_IP_Isitma_ve_Ayri_IPler\">5. Y\u00fcksek Hacimli G\u00f6nderimlerde IP Is\u0131tma ve Ayr\u0131 IP\u2019ler<\/span><\/h3>\n<p>E\u011fer transactional (sipari\u015f onay\u0131, \u015fifre s\u0131f\u0131rlama vb.) ve pazarlama (b\u00fclten, kampanya) e\u2011postalar\u0131n\u0131 birlikte g\u00f6nderiyorsan\u0131z, itibar y\u00f6netimi i\u00e7in bazen ayr\u0131 IP ve PTR kullanmak mant\u0131kl\u0131d\u0131r. \u00d6rne\u011fin:<\/p>\n<ul>\n<li><code>mail1.ornek.com<\/code> \u2192 transactional<\/li>\n<li><code>mail2.ornek.com<\/code> \u2192 b\u00fclten \/ kampanya<\/li>\n<\/ul>\n<p>Bu \u015fekilde herhangi bir segmentin itibar sorunu ya\u015famas\u0131 durumunda, di\u011ferini daha iyi koruyabilirsiniz. Elbette bu noktada IP \u0131s\u0131tma (warming) ve g\u00f6nderim hacmi stratejilerini de planlamak gerekir.<\/p>\n<h2><span id=\"Sik_Yapilan_Hatalar_ve_Sorun_Giderme\">S\u0131k Yap\u0131lan Hatalar ve Sorun Giderme<\/span><\/h2>\n<p>PTR ayar\u0131n\u0131 yapt\u0131\u011f\u0131n\u0131z halde e\u2011postalar\u0131n\u0131z h\u00e2l\u00e2 spam klas\u00f6r\u00fcne gidiyorsa, genellikle a\u015fa\u011f\u0131daki hatalardan biriyle kar\u015f\u0131 kar\u015f\u0131ya olursunuz.<\/p>\n<h3><span id=\"1_PTR_Var_Ama_Forward_DNS_Yok_veya_Yanlis\">1. PTR Var Ama Forward DNS Yok veya Yanl\u0131\u015f<\/span><\/h3>\n<p>En yayg\u0131n sorunlardan biri: IP \u2192 hostname (PTR) var ama hostname \u2192 IP (A\/AAAA) yok veya farkl\u0131 bir IP\u2019ye i\u015faret ediyor. Bu durumda FCrDNS sa\u011flanamad\u0131\u011f\u0131 i\u00e7in pek \u00e7ok spam filtresi uyar\u0131 verir. \u00c7\u00f6z\u00fcm:<\/p>\n<ul>\n<li><strong>\u00d6nce<\/strong> A\/AAAA kay\u0131tlar\u0131n\u0131 do\u011fru IP\u2019ye i\u015faret edecek \u015fekilde olu\u015fturun.<\/li>\n<li>Sonra PTR\u2019nin ger\u00e7ekten bu hostname\u2019e d\u00f6nd\u00fc\u011f\u00fcn\u00fc do\u011frulay\u0131n.<\/li>\n<\/ul>\n<h3><span id=\"2_Dinamik_Gorunumlu_PTR_Kullanmak\">2. Dinamik G\u00f6r\u00fcn\u00fcml\u00fc PTR Kullanmak<\/span><\/h3>\n<p>Varsay\u0131lan PTR olarak gelen \u201cdynamic-203-0-113-10.isp.net\u201d benzeri isimler anti-spam sistemlerinde genellikle g\u00fc\u00e7s\u00fcz sinyallerdir. E\u011fer bu PTR ile mail g\u00f6nderirseniz:<\/p>\n<ul>\n<li>Pek \u00e7ok RBL sizi \u201cdynamic dial-up\u201d\/&#8221;residential&#8221; segmentine alabilir.<\/li>\n<li>Transactional e\u2011postalar\u0131n\u0131z bile gereksiz yere spam\u2019e d\u00fc\u015febilir.<\/li>\n<\/ul>\n<p>Bu y\u00fczden mutlaka kendi alan ad\u0131n\u0131za ait, kurumsal bir hostname talep edin.<\/p>\n<h3><span id=\"3_Bir_IP_Icin_Birden_Fazla_PTR_Talep_Etmek\">3. Bir IP \u0130\u00e7in Birden Fazla PTR Talep Etmek<\/span><\/h3>\n<p>Baz\u0131 kullan\u0131c\u0131lar \u201cTek IP\u2019den 3\u20134 domain i\u00e7in mail at\u0131yorum, hepsi i\u00e7in ayr\u0131 PTR tan\u0131mlatay\u0131m\u201d diye d\u00fc\u015f\u00fcnebiliyor. Ancak pratikte:<\/p>\n<ul>\n<li>\u00c7o\u011fu al\u0131c\u0131 ilk d\u00f6nen PTR\u2019\u0131 baz al\u0131r.<\/li>\n<li>Geri kalan PTR\u2019lar g\u00f6rmezden gelinir ya da kafa kar\u0131\u015f\u0131kl\u0131\u011f\u0131 yarat\u0131r.<\/li>\n<\/ul>\n<p>Bu y\u00fczden IP ba\u015f\u0131na tek PTR, forward DNS\u2019te ise bir IP\u2019ye i\u015faret eden birden fazla A kayd\u0131 (veya tek A kayd\u0131) kullanmak daha temiz bir yakla\u015f\u0131md\u0131r.<\/p>\n<h3><span id=\"4_PTR_Dogru_Ama_SPFDKIMDMARC_Eksik\">4. PTR Do\u011fru Ama SPF\/DKIM\/DMARC Eksik<\/span><\/h3>\n<p>PTR\u2019\u0131 do\u011fru kurdu\u011funuz halde sorun devam ediyorsa, \u00e7o\u011fu zaman SPF, DKIM ve DMARC eksiktir veya yanl\u0131\u015f ayarlanm\u0131\u015ft\u0131r. \u00d6zellikle DMARC politikas\u0131 <code>p=reject<\/code> veya <code>p=quarantine<\/code> iken yanl\u0131\u015f hizalanma (alignment) ciddi teslim sorunlar\u0131na yol a\u00e7abilir. Bu tip durumlarda SPF ve DMARC raporlar\u0131n\u0131 incelemek ve <a href=\"https:\/\/www.dchost.com\/blog\/smtp-hata-kodlari-ve-bounce-mesajlari-rehberi\/\">SMTP hata kodlar\u0131 ve bounce mesajlar\u0131n\u0131 yorumlama rehberimizden<\/a> yararlanmak sorunu h\u0131zl\u0131ca daraltman\u0131z\u0131 sa\u011flar.<\/p>\n<h3><span id=\"5_IPv6_PTRlarini_Unutmak\">5. IPv6 PTR\u2019lar\u0131n\u0131 Unutmak<\/span><\/h3>\n<p>Giderek daha fazla al\u0131c\u0131 IPv6 \u00fczerinden ba\u011flant\u0131 kabul etmeye ba\u015flad\u0131. E\u011fer sunucunuzda IPv6 etkin ve MTA\u2019n\u0131z IPv6 IP\u2019sini de kullan\u0131yorsa:<\/p>\n<ul>\n<li>IPv6 i\u00e7in de PTR (ip6.arpa) tan\u0131mland\u0131\u011f\u0131ndan emin olun.<\/li>\n<li>HELO isminizin IPv6 A\/AAAA kay\u0131tlar\u0131yla da uyumlu oldu\u011funa bak\u0131n.<\/li>\n<\/ul>\n<p>IPv6\u2019y\u0131 devreye al\u0131rken DNS ve PTR taraf\u0131nda nelere dikkat etmeniz gerekti\u011fini, <a href=\"https:\/\/www.dchost.com\/blog\/ipv6-ile-e%e2%80%91posta-teslimi-nasil-rayina-oturur-ptr-helo-spf-ve-rbllerle-saha-rehberi\/\">IPv6 ile e\u2011posta teslimi rehberimizde<\/a> daha detayl\u0131 anlatt\u0131k.<\/p>\n<h2><span id=\"DCHost_Altyapisinda_PTR_Yonetimi_ve_Onerilen_Senaryolar\">DCHost Altyap\u0131s\u0131nda PTR Y\u00f6netimi ve \u00d6nerilen Senaryolar<\/span><\/h2>\n<p>DCHost taraf\u0131nda, kendi IP bloklar\u0131m\u0131z\u0131 ve reverse DNS alanlar\u0131n\u0131 do\u011frudan y\u00f6netti\u011fimiz i\u00e7in, PTR s\u00fcre\u00e7lerini olabildi\u011fince basit ve \u015feffaf tasarlamaya \u00e7al\u0131\u015f\u0131yoruz. Sahadan g\u00f6rd\u00fc\u011f\u00fcm\u00fcz en pratik ve problemsiz yakla\u015f\u0131m\u0131 \u015f\u00f6yle \u00f6zetleyebilirim:<\/p>\n<ul>\n<li>VPS veya dedicated sunucu ald\u0131\u011f\u0131n\u0131zda, projeye g\u00f6re kullanaca\u011f\u0131n\u0131z <strong>ana hostname\u2019i<\/strong> en ba\u015fta netle\u015ftirin (\u00f6rn. <code>server1.ornek.com<\/code> veya <code>mail.ornek.com<\/code>).<\/li>\n<li>\u00d6nce alan ad\u0131n\u0131z\u0131n DNS\u2019inde A\/AAAA kay\u0131tlar\u0131n\u0131 do\u011fru IP\u2019lere i\u015faret edin.<\/li>\n<li>Ard\u0131ndan m\u00fc\u015fteri panelinizden veya destek talebi \u00fczerinden bu IP\u2019ler i\u00e7in PTR talebinde bulunun.<\/li>\n<li>E\u2011posta altyap\u0131s\u0131 kuruyorsan\u0131z, ayn\u0131 anda SPF, DKIM ve DMARC plan\u0131n\u0131 da yap\u0131n; hepsini beraber kurgulamak daha sa\u011fl\u0131kl\u0131.<\/li>\n<\/ul>\n<p>Daha b\u00fct\u00fcnc\u00fcl bir e\u2011posta altyap\u0131s\u0131 kurmak istiyorsan\u0131z; IP \u0131s\u0131tma, itibar y\u00f6netimi, DNS kay\u0131tlar\u0131 ve log analizini bir arada ele alan <a href=\"https:\/\/www.dchost.com\/blog\/spf-dkim-dmarc-ve-rdns-ile-e-posta-teslim-edilebilirligini-nasil-adim-adim-yukseltirsin\/\">teslim edilebilirli\u011fi art\u0131rma rehberimiz<\/a> ile <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 kurulum rehberimizi<\/a> birlikte okuman\u0131z\u0131 tavsiye ederim.<\/p>\n<h2><span id=\"Ozet_ve_Son_Adim_PTRsiz_Mail_Altyapisi_Artik_Gecmiste_Kaldi\">\u00d6zet ve Son Ad\u0131m: PTR\u2019s\u0131z Mail Altyap\u0131s\u0131 Art\u0131k Ge\u00e7mi\u015fte Kald\u0131<\/span><\/h2>\n<p>Bug\u00fcn\u00fcn d\u00fcnyas\u0131nda, &#8220;PTR kayd\u0131 yok ama mail\u2019lerim yine de gidiyor&#8221; mant\u0131\u011f\u0131 maalesef eskide kald\u0131. E\u2011posta ekosistemi; SPF, DKIM, DMARC, MTA\u2011STS, TLS\u2011RPT, RBL\u2019ler derken olduk\u00e7a karma\u015f\u0131kla\u015ft\u0131 ve PTR bu b\u00fct\u00fcn\u00fcn temel ta\u015flar\u0131ndan biri haline geldi. \u00d6zellikle kendi VPS\u2019iniz veya dedicated sunucunuz \u00fczerinde mail sunucusu i\u015fletiyorsan\u0131z, PTR\u2019\u0131 do\u011fru kurgulamad\u0131\u011f\u0131n\u0131z her g\u00fcn; itibar puan\u0131n\u0131z\u0131 ve g\u00f6nderim ba\u015far\u0131n\u0131z\u0131 riske atm\u0131\u015f olursunuz.<\/p>\n<p>Do\u011fru kurgulanm\u0131\u015f bir PTR kayd\u0131; forward DNS ile tam uyumlu, HELO ismiyle hizal\u0131 ve SPF\/DKIM\/DMARC ile desteklenmi\u015fse, b\u00fcy\u00fck sa\u011flay\u0131c\u0131lar\u0131n g\u00f6z\u00fcnde \u201cbu IP ger\u00e7ekten bir sunucu ve i\u015fi mail g\u00f6ndermek\u201d sinyalini verir. DCHost olarak, gerek VPS ve dedicated sunucu hizmetlerimizde, gerek colocation taraf\u0131nda PTR ve genel DNS mimarisini i\u015finizin b\u00fcy\u00fcme plan\u0131na uygun \u015fekilde tasarlaman\u0131z i\u00e7in yan\u0131n\u0131zday\u0131z.<\/p>\n<p>E\u011fer \u015fu an elinizde bir IP var ve hangi hostname\u2019i kullanaca\u011f\u0131n\u0131zdan, PTR\u2019\u0131 nas\u0131l talep edece\u011finizden veya SPF\/DKIM\/DMARC\u2019\u0131 nas\u0131l hizalayaca\u011f\u0131n\u0131zdan emin de\u011filseniz; \u00f6nce yukar\u0131da link verdi\u011fimiz detayl\u0131 DNS ve e\u2011posta rehberlerimizi okuyun, ard\u0131ndan ihtiya\u00e7 duyarsan\u0131z DCHost ekibine projeyi k\u0131saca anlatarak dan\u0131\u015f\u0131n. B\u00f6ylece e\u2011posta teslim edilebilirli\u011fi sizin i\u00e7in g\u00f6r\u00fcnmez, sorunsuz i\u015fleyen bir altyap\u0131 detay\u0131 haline gelsin.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u0130&ccedil;indekiler1 PTR (Reverse DNS) Kayd\u0131 Nedir ve Neden Bu Kadar Konu\u015fuluyor?2 PTR (Reverse DNS) Kayd\u0131 Tam Olarak Nedir?2.1 PTR Kayd\u0131 Nerede Tutulur?3 Neden \u00d6zellikle E\u2011Posta Sunucular\u0131 \u0130\u00e7in Kritik?3.1 HELO\/EHLO, PTR ve G\u00fcven Skoru3.2 Kara Liste (RBL) ve PTR \u0130li\u015fkisi4 PTR Kayd\u0131 DNS Seviyesinde Nas\u0131l \u00c7al\u0131\u015f\u0131r?4.1 IPv4 i\u00e7in Reverse DNS (in-addr.arpa)4.2 IPv6 i\u00e7in Reverse DNS (ip6.arpa)4.3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2966,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-2965","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\/2965","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=2965"}],"version-history":[{"count":0,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/2965\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media\/2966"}],"wp:attachment":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media?parent=2965"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/categories?post=2965"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/tags?post=2965"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}