{"id":4950,"date":"2026-02-11T14:38:07","date_gmt":"2026-02-11T11:38:07","guid":{"rendered":"https:\/\/www.dchost.com\/blog\/dns-kayit-turleri-nedir-a-aaaa-mx-cname-txt-srv-ve-caa-icin-uygulamali-rehber\/"},"modified":"2026-02-11T14:38:07","modified_gmt":"2026-02-11T11:38:07","slug":"dns-kayit-turleri-nedir-a-aaaa-mx-cname-txt-srv-ve-caa-icin-uygulamali-rehber","status":"publish","type":"post","link":"https:\/\/www.dchost.com\/blog\/dns-kayit-turleri-nedir-a-aaaa-mx-cname-txt-srv-ve-caa-icin-uygulamali-rehber\/","title":{"rendered":"DNS Kay\u0131t T\u00fcrleri Nedir? A, AAAA, MX, CNAME, TXT, SRV ve CAA \u0130\u00e7in Uygulamal\u0131 Rehber"},"content":{"rendered":"<div class=\"dchost-blog-content-wrapper\"><p>Alan ad\u0131n\u0131z\u0131 sat\u0131n ald\u0131n\u0131z, hostinginizi veya sunucunuzu kurdunuz, s\u0131ra geldi her \u015feyi birbirine ba\u011flayan katmana: DNS kay\u0131tlar\u0131. Panelde kar\u015f\u0131n\u0131za \u00e7\u0131kan A, AAAA, MX, CNAME, TXT, SRV, CAA gibi k\u0131saltmalar ilk bak\u0131\u015fta karma\u015f\u0131k g\u00f6r\u00fcnebilir; ancak mant\u0131\u011f\u0131n\u0131 bir kez oturttu\u011funuzda hem web sitenizi hem de e-posta altyap\u0131n\u0131z\u0131 \u00e7ok daha kontroll\u00fc \u015fekilde y\u00f6netebilirsiniz. DCHost ekibinde g\u00fcnl\u00fck i\u015fimizin \u00f6nemli bir k\u0131sm\u0131, yanl\u0131\u015f yap\u0131land\u0131r\u0131lm\u0131\u015f DNS kay\u0131tlar\u0131n\u0131n sebep oldu\u011fu eri\u015fim ve e-posta sorunlar\u0131n\u0131 \u00e7\u00f6zmekle ge\u00e7iyor. Bu rehberde amac\u0131m\u0131z, bu hatalar\u0131 siz daha yapmadan \u00f6nlemek.<\/p>\n<p>A\u015fa\u011f\u0131da en s\u0131k kullan\u0131lan DNS kay\u0131t t\u00fcrlerini, ger\u00e7ek\u00e7i senaryolar ve \u00f6rnek zone \u00e7\u0131kt\u0131lar\u0131yla ad\u0131m ad\u0131m anlataca\u011f\u0131z. Hangi kayd\u0131 ne zaman kullanman\u0131z gerekti\u011fini, hangi durumda kesinlikle kullanmaman\u0131z gerekti\u011fini, TTL de\u011ferlerini nas\u0131l d\u00fc\u015f\u00fcnmeniz gerekti\u011fini ve CAA gibi g\u00fcvenlik odakl\u0131 kay\u0131tlar\u0131 pratikte nas\u0131l ele alabilece\u011finizi birlikte netle\u015ftirelim. E\u011fer DNS\u2019in temellerini de tazelemek isterseniz, \u00f6nce <a href=\"https:\/\/www.dchost.com\/blog\/alan-adi-dns-ve-web-hosting-nedir\/\">alan ad\u0131, DNS ve web hosting ili\u015fkisini detayl\u0131 anlatt\u0131\u011f\u0131m\u0131z rehbere<\/a> g\u00f6z atman\u0131z faydal\u0131 olabilir.<\/p>\n<div id=\"toc_container\" class=\"toc_transparent no_bullets\"><p class=\"toc_title\">\u0130&ccedil;indekiler<\/p><ul class=\"toc_list\"><li><a href=\"#DNS_Kayitlari_Nasil_Calisir\"><span class=\"toc_number toc_depth_1\">1<\/span> DNS Kay\u0131tlar\u0131 Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/a><\/li><li><a href=\"#Ornek_Bir_DNS_Zone_Dosyasi\"><span class=\"toc_number toc_depth_1\">2<\/span> \u00d6rnek Bir DNS Zone Dosyas\u0131<\/a><\/li><li><a href=\"#A_Kaydi_IPv4_Adresine_Giden_Yol\"><span class=\"toc_number toc_depth_1\">3<\/span> A Kayd\u0131: IPv4 Adresine Giden Yol<\/a><ul><li><a href=\"#A_kaydi_nedir\"><span class=\"toc_number toc_depth_2\">3.1<\/span> A kayd\u0131 nedir?<\/a><\/li><li><a href=\"#Pratik_A_kaydi_senaryolari\"><span class=\"toc_number toc_depth_2\">3.2<\/span> Pratik A kayd\u0131 senaryolar\u0131<\/a><\/li><li><a href=\"#A_kaydinda_sik_yapilan_hatalar\"><span class=\"toc_number toc_depth_2\">3.3<\/span> A kayd\u0131nda s\u0131k yap\u0131lan hatalar<\/a><\/li><\/ul><\/li><li><a href=\"#AAAA_Kaydi_IPv6ya_Hazirlik\"><span class=\"toc_number toc_depth_1\">4<\/span> AAAA Kayd\u0131: IPv6\u2019ya Haz\u0131rl\u0131k<\/a><ul><li><a href=\"#AAAA_kaydi_nedir\"><span class=\"toc_number toc_depth_2\">4.1<\/span> AAAA kayd\u0131 nedir?<\/a><\/li><li><a href=\"#Ne_zaman_AAAA_kaydi_eklemelisiniz\"><span class=\"toc_number toc_depth_2\">4.2<\/span> Ne zaman AAAA kayd\u0131 eklemelisiniz?<\/a><\/li><li><a href=\"#Ornek_A_AAAA_beraber_kullanimi\"><span class=\"toc_number toc_depth_2\">4.3<\/span> \u00d6rnek A + AAAA beraber kullan\u0131m\u0131<\/a><\/li><\/ul><\/li><li><a href=\"#MX_Kaydi_E-Postanin_Gittigi_Yer\"><span class=\"toc_number toc_depth_1\">5<\/span> MX Kayd\u0131: E-Postan\u0131n Gitti\u011fi Yer<\/a><ul><li><a href=\"#MX_kaydi_nedir\"><span class=\"toc_number toc_depth_2\">5.1<\/span> MX kayd\u0131 nedir?<\/a><\/li><li><a href=\"#Yedekli_MX_backup_MX_kullanimi\"><span class=\"toc_number toc_depth_2\">5.2<\/span> Yedekli MX (backup MX) kullan\u0131m\u0131<\/a><\/li><li><a href=\"#MX_kayitlarinda_kritik_hatalar\"><span class=\"toc_number toc_depth_2\">5.3<\/span> MX kay\u0131tlar\u0131nda kritik hatalar<\/a><\/li><\/ul><\/li><li><a href=\"#CNAME_Kaydi_Takma_Ad_Mantigi\"><span class=\"toc_number toc_depth_1\">6<\/span> CNAME Kayd\u0131: Takma Ad Mant\u0131\u011f\u0131<\/a><ul><li><a href=\"#CNAME_nedir\"><span class=\"toc_number toc_depth_2\">6.1<\/span> CNAME nedir?<\/a><\/li><li><a href=\"#CNAME_ne_zaman_mantikli\"><span class=\"toc_number toc_depth_2\">6.2<\/span> CNAME ne zaman mant\u0131kl\u0131?<\/a><\/li><li><a href=\"#CNAMEde_yapilmamasi_gerekenler\"><span class=\"toc_number toc_depth_2\">6.3<\/span> CNAME\u2019de yap\u0131lmamas\u0131 gerekenler<\/a><\/li><\/ul><\/li><li><a href=\"#TXT_Kaydi_SPF_DKIM_DMARC_ve_Daha_Fazlasi\"><span class=\"toc_number toc_depth_1\">7<\/span> TXT Kayd\u0131: SPF, DKIM, DMARC ve Daha Fazlas\u0131<\/a><ul><li><a href=\"#TXT_kaydi_nedir\"><span class=\"toc_number toc_depth_2\">7.1<\/span> TXT kayd\u0131 nedir?<\/a><\/li><li><a href=\"#Ornek_TXT_kayitlari\"><span class=\"toc_number toc_depth_2\">7.2<\/span> \u00d6rnek TXT kay\u0131tlar\u0131<\/a><\/li><li><a href=\"#TXT_kayitlarinda_dikkat_edilmesi_gerekenler\"><span class=\"toc_number toc_depth_2\">7.3<\/span> TXT kay\u0131tlar\u0131nda dikkat edilmesi gerekenler<\/a><\/li><\/ul><\/li><li><a href=\"#SRV_Kaydi_Servis_Kesfi_Service_Discovery\"><span class=\"toc_number toc_depth_1\">8<\/span> SRV Kayd\u0131: Servis Ke\u015ffi (Service Discovery)<\/a><ul><li><a href=\"#SRV_kaydi_nedir\"><span class=\"toc_number toc_depth_2\">8.1<\/span> SRV kayd\u0131 nedir?<\/a><\/li><li><a href=\"#Oncelik_ve_agirlik_nasil_kullanilir\"><span class=\"toc_number toc_depth_2\">8.2<\/span> \u00d6ncelik ve a\u011f\u0131rl\u0131k nas\u0131l kullan\u0131l\u0131r?<\/a><\/li><\/ul><\/li><li><a href=\"#CAA_Kaydi_SSL_Sertifikasi_Guvenlik_Katmani\"><span class=\"toc_number toc_depth_1\">9<\/span> CAA Kayd\u0131: SSL Sertifikas\u0131 G\u00fcvenlik Katman\u0131<\/a><ul><li><a href=\"#CAA_kaydi_nedir\"><span class=\"toc_number toc_depth_2\">9.1<\/span> CAA kayd\u0131 nedir?<\/a><\/li><li><a href=\"#CAA_kayit_turleri\"><span class=\"toc_number toc_depth_2\">9.2<\/span> CAA kay\u0131t t\u00fcrleri<\/a><\/li><li><a href=\"#CAA_kullanirken_dikkat_edilmesi_gerekenler\"><span class=\"toc_number toc_depth_2\">9.3<\/span> CAA kullan\u0131rken dikkat edilmesi gerekenler<\/a><\/li><\/ul><\/li><li><a href=\"#DNS_Degisiklikleri_TTL_ve_Yayilim_Suresi\"><span class=\"toc_number toc_depth_1\">10<\/span> DNS De\u011fi\u015fiklikleri, TTL ve Yay\u0131l\u0131m S\u00fcresi<\/a><\/li><li><a href=\"#Yeni_Bir_Proje_Icin_Ornek_DNS_Taslagi\"><span class=\"toc_number toc_depth_1\">11<\/span> Yeni Bir Proje \u0130\u00e7in \u00d6rnek DNS Tasla\u011f\u0131<\/a><\/li><li><a href=\"#DCHost_Tarafinda_DNS_Yonetimini_Nasil_Dusunmelisiniz\"><span class=\"toc_number toc_depth_1\">12<\/span> DCHost Taraf\u0131nda DNS Y\u00f6netimini Nas\u0131l D\u00fc\u015f\u00fcnmelisiniz?<\/a><\/li><li><a href=\"#Ozet_ve_Sonraki_Adimlar\"><span class=\"toc_number toc_depth_1\">13<\/span> \u00d6zet ve Sonraki Ad\u0131mlar<\/a><\/li><\/ul><\/div>\n<h2><span id=\"DNS_Kayitlari_Nasil_Calisir\">DNS Kay\u0131tlar\u0131 Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/span><\/h2>\n<p>DNS\u2019i basit\u00e7e, alan ad\u0131n\u0131z\u0131 (\u00f6rne\u011fin <strong>example.com<\/strong>) teknik ayr\u0131nt\u0131lara (IP adresleri, mail sunucular\u0131, servis adresleri vb.) \u00e7eviren bir telefon rehberi gibi d\u00fc\u015f\u00fcnebilirsiniz. DNS b\u00f6lge dosyan\u0131zda (zone) tan\u0131mlad\u0131\u011f\u0131n\u0131z her kay\u0131t t\u00fcr\u00fc, bu rehberin i\u00e7inde ayr\u0131 bir sat\u0131rd\u0131r.<\/p>\n<ul>\n<li><strong>A \/ AAAA<\/strong>: Alan ad\u0131n\u0131n hangi IP adresine gidece\u011fini s\u00f6yler.<\/li>\n<li><strong>MX<\/strong>: E-postalar\u0131 hangi sunucunun alaca\u011f\u0131n\u0131 tan\u0131mlar.<\/li>\n<li><strong>CNAME<\/strong>: Bir alan ad\u0131n\u0131 ba\u015fka bir alan ad\u0131na takma ad olarak y\u00f6nlendirir.<\/li>\n<li><strong>TXT<\/strong>: SPF, DKIM, DMARC gibi do\u011frulama ve \u00e7e\u015fitli metin verilerini tutar.<\/li>\n<li><strong>SRV<\/strong>: Belirli servislerin (VoIP, chat, autodiscover vb.) hangi host ve porttan hizmet verece\u011fini belirtir.<\/li>\n<li><strong>CAA<\/strong>: Alan ad\u0131n\u0131z i\u00e7in hangi sertifika otoritelerinin <a href=\"https:\/\/www.dchost.com\/tr\/ssl\">SSL sertifikas\u0131<\/a> \u00fcretebilece\u011fini k\u0131s\u0131tlar.<\/li>\n<\/ul>\n<p>Her kayd\u0131n bir <strong>ad<\/strong> (name), <strong>tip<\/strong> (type), <strong>de\u011fer<\/strong> (value) ve \u00e7o\u011fu zaman bir de <strong>TTL<\/strong> (Time To Live) de\u011feri vard\u0131r. TTL, bu kayd\u0131n DNS \u00f6nbelleklerinde ne kadar s\u00fcre saklanaca\u011f\u0131n\u0131 belirler. TTL konusu ba\u015fl\u0131 ba\u015f\u0131na bir strateji gerektirir; bu taraf\u0131 daha derin anlamak 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 do\u011fru ayarlamak i\u00e7in haz\u0131rlad\u0131\u011f\u0131m\u0131z strateji rehberini<\/a> mutlaka okuyun.<\/p>\n<h2><span id=\"Ornek_Bir_DNS_Zone_Dosyasi\">\u00d6rnek Bir DNS Zone Dosyas\u0131<\/span><\/h2>\n<p>Anlat\u0131m\u0131 daha somut hale getirmek i\u00e7in basit bir \u00f6rnek \u00fczerinden gidelim. A\u015fa\u011f\u0131daki \u00f6rnek, <strong>example.com<\/strong> i\u00e7in tipik bir DNS zone\u2019udur:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">@      3600   IN   A      203.0.113.10\n@      3600   IN   AAAA   2001:db8::10\nwww    3600   IN   CNAME  example.com.\nmail   3600   IN   A      203.0.113.20\n@      3600   IN   MX     10 mail.example.com.\n@      3600   IN   TXT    &quot;v=spf1 a mx -all&quot;\n_sip._tcp 3600 IN SRV     10 60 5060 sip.example.com.\n@      3600   IN   CAA    0 issue &quot;letsencrypt.org&quot;<\/code><\/pre>\n<p>\u015eimdi bu kay\u0131tlar\u0131 tek tek a\u00e7al\u0131m ve ger\u00e7ek hayat senaryolar\u0131nda nereye dokunduklar\u0131n\u0131 g\u00f6relim.<\/p>\n<h2><span id=\"A_Kaydi_IPv4_Adresine_Giden_Yol\">A Kayd\u0131: IPv4 Adresine Giden Yol<\/span><\/h2>\n<h3><span id=\"A_kaydi_nedir\">A kayd\u0131 nedir?<\/span><\/h3>\n<p><strong>A (Address) kayd\u0131<\/strong>, bir alan ad\u0131n\u0131 bir IPv4 adresine (\u00f6r. 203.0.113.10) \u00e7\u00f6zer. Kullan\u0131c\u0131 taray\u0131c\u0131s\u0131na <strong>example.com<\/strong> yazd\u0131\u011f\u0131nda, DNS sorgusu A kayd\u0131n\u0131 bulur ve bu IP\u2019ye gider.<\/p>\n<p>DCHost m\u00fc\u015fterilerinde en s\u0131k g\u00f6rd\u00fc\u011f\u00fcm\u00fcz kullan\u0131m:<\/p>\n<ul>\n<li><strong>Alan ad\u0131n\u0131n k\u00f6k\u00fc (root \/ @)<\/strong> i\u00e7in bir A kayd\u0131: <code>@ \u2192 203.0.113.10<\/code><\/li>\n<li><strong>Alt alan adlar\u0131<\/strong> i\u00e7in ek A kay\u0131tlar\u0131: <code>api \u2192 203.0.113.11<\/code>, <code>panel \u2192 203.0.113.12<\/code> gibi.<\/li>\n<\/ul>\n<h3><span id=\"Pratik_A_kaydi_senaryolari\">Pratik A kayd\u0131 senaryolar\u0131<\/span><\/h3>\n<ul>\n<li><strong>Tek <a href=\"https:\/\/www.dchost.com\/tr\/vps\">VPS<\/a> \u00fczerinde site<\/strong>: T\u00fcm trafik ayn\u0131 IP\u2019ye gider: <code>@<\/code> ve <code>www<\/code> ayn\u0131 sunucuya i\u015faret eder.<\/li>\n<li><strong>\u00d6n tarafta CDN, arkada origin<\/strong>: <code>@<\/code> kayd\u0131n\u0131z\u0131 CDN\u2019in verdi\u011fi IP\u2019ye, <code>origin.example.com<\/code> kayd\u0131n\u0131z\u0131 ise ger\u00e7ek sunucu IP\u2019sine y\u00f6nlendirebilirsiniz.<\/li>\n<li><strong>Ayr\u0131 uygulama sunucular\u0131<\/strong>: <code>api.example.com<\/code>, <code>admin.example.com<\/code> gibi farkl\u0131 alt alan adlar\u0131n\u0131 farkl\u0131 VPS\u2019lere y\u00f6nlendirebilirsiniz.<\/li>\n<\/ul>\n<h3><span id=\"A_kaydinda_sik_yapilan_hatalar\">A kayd\u0131nda s\u0131k yap\u0131lan hatalar<\/span><\/h3>\n<ul>\n<li><strong>Yanl\u0131\u015f IP<\/strong>: En kritik ve en basit hata. Yeni sunucuya ge\u00e7ti\u011finizde IP\u2019yi g\u00fcncellemeyi unutursan\u0131z site eski sunucuya gitmeye devam eder.<\/li>\n<li><strong>\u00c7ok y\u00fcksek TTL ile kilitlenmek<\/strong>: 86400 (24 saat) gibi y\u00fcksek TTL de\u011ferleriyle, ta\u015f\u0131nma an\u0131nda de\u011fi\u015fikliklerinizin ge\u00e7 yay\u0131lmas\u0131na sebep olabilirsiniz. Ta\u015f\u0131ma \u00f6ncesi TTL\u2019i ge\u00e7ici olarak d\u00fc\u015f\u00fcrmek daha iyi bir stratejidir.<\/li>\n<li><strong>Bo\u015fta kalan A kay\u0131tlar\u0131<\/strong>: Kullan\u0131lmayan alt alan adlar\u0131n\u0131 b\u0131rakmak, <a href=\"https:\/\/www.dchost.com\/blog\/subdomain-takeover-ve-bosta-kalan-dns-kayitlari-alan-adi-guvenligi-marka-ve-seo-riskleri\/\">subdomain takeover<\/a> gibi g\u00fcvenlik risklerine a\u00e7\u0131k kap\u0131 b\u0131rakabilir.<\/li>\n<\/ul>\n<p>En tipik DNS yanl\u0131\u015flar\u0131n\u0131 daha geni\u015f bir perspektifle g\u00f6rmek i\u00e7in, <a href=\"https:\/\/www.dchost.com\/blog\/en-sik-yapilan-dns-hatalari-web-sitesi-ve-e-postayi-ucurmadan-once-kontrol-etmeniz-gereken-10-kayit\/\">en s\u0131k yap\u0131lan DNS hatalar\u0131n\u0131 listeledi\u011fimiz yaz\u0131ya<\/a> da mutlaka g\u00f6z atman\u0131z\u0131 \u00f6neririz.<\/p>\n<h2><span id=\"AAAA_Kaydi_IPv6ya_Hazirlik\">AAAA Kayd\u0131: IPv6\u2019ya Haz\u0131rl\u0131k<\/span><\/h2>\n<h3><span id=\"AAAA_kaydi_nedir\">AAAA kayd\u0131 nedir?<\/span><\/h3>\n<p><strong>AAAA (Quad-A) kayd\u0131<\/strong>, bir alan ad\u0131n\u0131 IPv6 adresine (\u00f6r. 2001:db8::10) \u00e7\u00f6zer. Yap\u0131, A kayd\u0131na \u00e7ok benzer; tek fark kullan\u0131lan IP s\u00fcr\u00fcm\u00fcd\u00fcr. Modern taray\u0131c\u0131lar ve i\u015fletim sistemleri, hem A hem AAAA kayd\u0131 varsa tercihen IPv6 ba\u011flant\u0131 kurmaya \u00e7al\u0131\u015f\u0131r.<\/p>\n<h3><span id=\"Ne_zaman_AAAA_kaydi_eklemelisiniz\">Ne zaman AAAA kayd\u0131 eklemelisiniz?<\/span><\/h3>\n<ul>\n<li>Sunucunuzda IPv6 adresi tan\u0131ml\u0131ysa,<\/li>\n<li>Firewall ve web sunucusu konfig\u00fcrasyonunuz IPv6\u2019y\u0131 destekliyorsa,<\/li>\n<li>Monitoring, log ve g\u00fcvenlik kurallar\u0131n\u0131z IPv6\u2019y\u0131 hesaba kat\u0131yorsa.<\/li>\n<\/ul>\n<p>S\u0131k yap\u0131lan hata, sadece AAAA kayd\u0131 ekleyip sunucuda IPv6\u2019y\u0131 do\u011fru yap\u0131land\u0131rmamakt\u0131r. Bu durumda IPv6 \u00fczerinden gelen istekler cevap alamaz, ziyaret\u00e7ileriniz zaman zaman siteye ula\u015famaz.<\/p>\n<h3><span id=\"Ornek_A_AAAA_beraber_kullanimi\">\u00d6rnek A + AAAA beraber kullan\u0131m\u0131<\/span><\/h3>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">@   3600  IN  A     203.0.113.10\n@   3600  IN  AAAA  2001:db8::10<\/code><\/pre>\n<p>Bu durumda hem IPv4 hem IPv6\u2019l\u0131 kullan\u0131c\u0131lar alan ad\u0131n\u0131za ula\u015fabilir. DCHost \u00fczerinde yeni nesil projeler planl\u0131yorsan\u0131z, IPv6 taraf\u0131n\u0131 da ba\u015ftan tasarlamak uzun vadede b\u00fcy\u00fck avantaj sa\u011flar.<\/p>\n<h2><span id=\"MX_Kaydi_E-Postanin_Gittigi_Yer\">MX Kayd\u0131: E-Postan\u0131n Gitti\u011fi Yer<\/span><\/h2>\n<h3><span id=\"MX_kaydi_nedir\">MX kayd\u0131 nedir?<\/span><\/h3>\n<p><strong>MX (Mail Exchanger) kayd\u0131<\/strong>, alan ad\u0131n\u0131za gelen e-postalar\u0131 hangi sunucunun teslim alaca\u011f\u0131n\u0131 belirler. \u00d6rne\u011fin <strong>info@example.com<\/strong> adresine g\u00f6nderilen mailin hangi sunucuya gidece\u011fine MX kayd\u0131 karar verir.<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">@   3600  IN  MX  10  mail.example.com.\nmail 3600  IN  A      203.0.113.20<\/code><\/pre>\n<p>Burada:<\/p>\n<ul>\n<li><strong>mail.example.com<\/strong> e-posta sunucusudur,<\/li>\n<li>MX kayd\u0131 bu host\u2019a i\u015faret eder,<\/li>\n<li><strong>10<\/strong> ise \u00f6ncelik de\u011feridir (birden \u00e7ok MX kayd\u0131 varsa d\u00fc\u015f\u00fck olan daha \u00f6nceliklidir).<\/li>\n<\/ul>\n<h3><span id=\"Yedekli_MX_backup_MX_kullanimi\">Yedekli MX (backup MX) kullan\u0131m\u0131<\/span><\/h3>\n<p>Daha kurumsal yap\u0131larda, birincil sunucu ge\u00e7ici olarak eri\u015filemez olsa bile maillerin kaybolmamas\u0131 i\u00e7in yedek MX kullan\u0131l\u0131r:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">@   3600  IN  MX  10 mail1.example.com.\n@   3600  IN  MX  20 mail2.example.com.<\/code><\/pre>\n<p>B\u00f6ylece birincil sunucu down oldu\u011funda, g\u00f6nderen sunucular ikinci MX\u2019e mail b\u0131rakmay\u0131 dener. Bu yap\u0131lar\u0131n tasar\u0131m\u0131na dair daha kapsaml\u0131 bir bak\u0131\u015f i\u00e7in, <a href=\"https:\/\/www.dchost.com\/blog\/e-posta-altyapisinda-yedeklilik-birden-fazla-mx-kaydi-backup-mx-ve-split-delivery-kurulumu\/\">e-posta altyap\u0131s\u0131nda yedeklilik rehberimizi<\/a> inceleyebilirsiniz.<\/p>\n<h3><span id=\"MX_kayitlarinda_kritik_hatalar\">MX kay\u0131tlar\u0131nda kritik hatalar<\/span><\/h3>\n<ul>\n<li><strong>MX\u2019in A yerine CNAME\u2019e i\u015faret etmesi<\/strong>: Bir\u00e7ok e-posta servisi, MX hedefinin CNAME olmas\u0131n\u0131 istemez. M\u00fcmk\u00fcnse do\u011frudan A (veya AAAA) kayd\u0131na i\u015faret eden bir hostname kullan\u0131n.<\/li>\n<li><strong>MX kayd\u0131 var, ama kar\u015f\u0131l\u0131\u011f\u0131nda A\/AAAA yok<\/strong>: <code>mail.example.com<\/code> i\u00e7in A ya da AAAA kayd\u0131 tan\u0131ml\u0131 de\u011filse, e-postalar\u0131n\u0131z geri d\u00f6ner.<\/li>\n<li><strong>MX kayd\u0131 hi\u00e7 yok<\/strong>: \u00c7o\u011fu g\u00f6nderici sunucu e-posta atamaz veya alan ad\u0131n\u0131z\u0131 ge\u00e7ersiz sayar.<\/li>\n<\/ul>\n<h2><span id=\"CNAME_Kaydi_Takma_Ad_Mantigi\">CNAME Kayd\u0131: Takma Ad Mant\u0131\u011f\u0131<\/span><\/h2>\n<h3><span id=\"CNAME_nedir\">CNAME nedir?<\/span><\/h3>\n<p><strong>CNAME (Canonical Name) kayd\u0131<\/strong>, bir alan ad\u0131n\u0131 ba\u015fka bir alan ad\u0131na takma ad (alias) yapar. \u00d6zetle, \u201cBu alt alan ad\u0131, asl\u0131nda \u015furay\u0131 g\u00f6steriyor\u201d demektir.<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">www   3600  IN  CNAME  example.com.\ncdn   3600  IN  CNAME  cdn-sa\u011flay\u0131c\u0131-\u00f6rne\u011fi.com.<\/code><\/pre>\n<p>Burada <strong>www.example.com<\/strong>, <strong>example.com<\/strong>\u2019un takma ad\u0131 olur. Taray\u0131c\u0131 www i\u00e7in sorgu yapt\u0131\u011f\u0131nda, \u00f6nce CNAME\u2019i g\u00f6r\u00fcr, sonra hedefteki (\u00f6r. A\/AAAA) kayd\u0131 \u00e7\u00f6zer.<\/p>\n<h3><span id=\"CNAME_ne_zaman_mantikli\">CNAME ne zaman mant\u0131kl\u0131?<\/span><\/h3>\n<ul>\n<li><strong>www \u2192 k\u00f6k alan ad\u0131<\/strong>: En yayg\u0131n senaryo. IP\u2019yi tek yerde y\u00f6netmi\u015f olursunuz.<\/li>\n<li><strong>CDN veya d\u0131\u015f servisler<\/strong>: CDN, e-posta do\u011frulama, \u00fc\u00e7\u00fcnc\u00fc parti servislere y\u00f6nlenen alt alan adlar\u0131 i\u00e7in idealdir.<\/li>\n<li><strong>Ayn\u0131 servisi kullanan \u00e7oklu alt alan adlar\u0131<\/strong>: <code>static<\/code>, <code>assets<\/code>, <code>images<\/code> gibi alt alan adlar\u0131n\u0131 tek bir \u201ckanonik\u201d host\u2019a CNAME ile ba\u011flayabilirsiniz.<\/li>\n<\/ul>\n<h3><span id=\"CNAMEde_yapilmamasi_gerekenler\">CNAME\u2019de yap\u0131lmamas\u0131 gerekenler<\/span><\/h3>\n<ul>\n<li><strong>K\u00f6k alan ad\u0131nda (@) CNAME kullanmak<\/strong>: DNS standartlar\u0131na g\u00f6re zone k\u00f6k\u00fc i\u00e7in CNAME kullanmak do\u011fru de\u011fildir ve bir\u00e7ok DNS sa\u011flay\u0131c\u0131 buna izin vermez.<\/li>\n<li><strong>MX hedefini CNAME yapmak<\/strong>: Bir \u00f6nceki b\u00f6l\u00fcmde de\u011findi\u011fimiz gibi, MX hedefleri do\u011frudan A\/AAAA\u2019ya i\u015faret etmelidir.<\/li>\n<li><strong>Gereksiz CNAME zincirleri<\/strong>: <code>a \u2192 b \u2192 c \u2192 d<\/code> gibi uzun zincirler gecikme ve hata riskini art\u0131r\u0131r.<\/li>\n<\/ul>\n<p>CNAME\u2019lerin TTL de\u011ferleri ve zincirlenmesiyle ilgili ince ayar yaparken, tekrar <a href=\"https:\/\/www.dchost.com\/blog\/dns-ttl-degerlerini-dogru-ayarlamak-a-mx-cname-ve-txt-kayitlari-icin-stratejik-rehber\/\">TTL stratejisi rehberine<\/a> bakmak iyi bir fikirdir.<\/p>\n<h2><span id=\"TXT_Kaydi_SPF_DKIM_DMARC_ve_Daha_Fazlasi\">TXT Kayd\u0131: SPF, DKIM, DMARC ve Daha Fazlas\u0131<\/span><\/h2>\n<h3><span id=\"TXT_kaydi_nedir\">TXT kayd\u0131 nedir?<\/span><\/h3>\n<p><strong>TXT (Text) kayd\u0131<\/strong>, serbest metin saklamak i\u00e7in kullan\u0131l\u0131r. Ancak pratikte en \u00f6nemli kullan\u0131m alanlar\u0131:<\/p>\n<ul>\n<li><strong>SPF<\/strong>: Hangi sunucular\u0131n alan ad\u0131n\u0131z ad\u0131na e-posta g\u00f6ndermeye yetkili oldu\u011funu belirtir.<\/li>\n<li><strong>DKIM<\/strong>: G\u00f6nderilen e-postalar\u0131n imzas\u0131n\u0131 do\u011frulamak i\u00e7in kullan\u0131l\u0131r.<\/li>\n<li><strong>DMARC<\/strong>: SPF\/DKIM sonu\u00e7lar\u0131na g\u00f6re e-posta politikan\u0131z\u0131 (reject\/quarantine\/none) bildirir.<\/li>\n<li><strong>Sahiplik do\u011frulama<\/strong>: Arama motorlar\u0131, e-posta servisleri, \u00fc\u00e7\u00fcnc\u00fc parti uygulamalar alan ad\u0131n\u0131z\u0131n size ait oldu\u011funu do\u011frulamak i\u00e7in TXT kayd\u0131 ister.<\/li>\n<\/ul>\n<h3><span id=\"Ornek_TXT_kayitlari\">\u00d6rnek TXT kay\u0131tlar\u0131<\/span><\/h3>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">@      3600  IN  TXT  &quot;v=spf1 a mx -all&quot;\n_dmarc 3600  IN  TXT  &quot;v=DMARC1; p=quarantine; rua=mailto:dmarc@example.com&quot;\n@      3600  IN  TXT  &quot;google-site-verification=xyz123&quot;<\/code><\/pre>\n<p>Burada:<\/p>\n<ul>\n<li>SPF kayd\u0131, sadece alan ad\u0131n\u0131z\u0131n A ve MX kay\u0131tlar\u0131ndaki IP\u2019lerin mail g\u00f6ndermesine izin verir.<\/li>\n<li>DMARC, SPF\/DKIM ba\u015far\u0131s\u0131z olursa mailleri <em>karantinaya<\/em> almay\u0131 \u00f6nerir ve raporlar\u0131n nereye g\u00f6nderilece\u011fini belirtir.<\/li>\n<li>Son TXT kayd\u0131, bir servis sa\u011flay\u0131c\u0131n\u0131n alan ad\u0131 do\u011frulamas\u0131 i\u00e7indir.<\/li>\n<\/ul>\n<h3><span id=\"TXT_kayitlarinda_dikkat_edilmesi_gerekenler\">TXT kay\u0131tlar\u0131nda dikkat edilmesi gerekenler<\/span><\/h3>\n<ul>\n<li><strong>Birden \u00e7ok SPF kayd\u0131<\/strong>: Ayn\u0131 alanda birden fazla SPF kayd\u0131 olmamal\u0131d\u0131r; t\u00fcm yetkili IP\u2019leri tek bir SPF dizesinde birle\u015ftirin.<\/li>\n<li><strong>255 karakter s\u0131n\u0131r\u0131<\/strong>: DNS sat\u0131r ba\u015f\u0131na 255 karakter s\u0131n\u0131r\u0131 vard\u0131r; uzun DMARC veya SPF kay\u0131tlar\u0131n\u0131 b\u00f6lmeniz gerekebilir.<\/li>\n<li><strong>Yanl\u0131\u015f alanda TXT<\/strong>: \u00d6zellikle DMARC i\u00e7in <code>_dmarc.example.com<\/code> gibi \u00f6zel alt alan kullanman\u0131z gerekir; k\u00f6k alana yazmak yeterli de\u011fildir.<\/li>\n<\/ul>\n<p>E-posta teslim edilebilirli\u011fi taraf\u0131n\u0131 b\u00fct\u00fcnsel ele almak isterseniz, DNS ve IP itibar\u0131 boyutunu da kapsayan <a href=\"https:\/\/www.dchost.com\/blog\/e-posta-teslim-edilebilirligi-denetim-listesi-dns-ip-itibari-icerik-ve-loglar\/\">e-posta teslim edilebilirli\u011fi denetim listemiz<\/a> size iyi bir kontrol \u00e7er\u00e7evesi sunacakt\u0131r.<\/p>\n<h2><span id=\"SRV_Kaydi_Servis_Kesfi_Service_Discovery\">SRV Kayd\u0131: Servis Ke\u015ffi (Service Discovery)<\/span><\/h2>\n<h3><span id=\"SRV_kaydi_nedir\">SRV kayd\u0131 nedir?<\/span><\/h3>\n<p><strong>SRV (Service) kayd\u0131<\/strong>, belirli bir servisin hangi host, port ve \u00f6ncelik ile hizmet verdi\u011fini tan\u0131mlar. \u00d6zellikle VoIP (SIP), XMPP, baz\u0131 Microsoft servisleri ve autodiscover mekanizmalar\u0131nda kullan\u0131l\u0131r.<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">_sip._tcp   3600  IN  SRV  10 60 5060 sip1.example.com.\n_sip._tcp   3600  IN  SRV  20 40 5060 sip2.example.com.<\/code><\/pre>\n<p>Bu kay\u0131tta:<\/p>\n<ul>\n<li><strong>_sip<\/strong> servis ad\u0131d\u0131r,<\/li>\n<li><strong>_tcp<\/strong> protokold\u00fcr (TCP\/UDP),<\/li>\n<li><strong>10<\/strong> \u00f6ncelik, <strong>60<\/strong> a\u011f\u0131rl\u0131k, <strong>5060<\/strong> port numaras\u0131d\u0131r.<\/li>\n<\/ul>\n<h3><span id=\"Oncelik_ve_agirlik_nasil_kullanilir\">\u00d6ncelik ve a\u011f\u0131rl\u0131k nas\u0131l kullan\u0131l\u0131r?<\/span><\/h3>\n<ul>\n<li><strong>priority (\u00f6ncelik)<\/strong>: En d\u00fc\u015f\u00fck de\u011ferli kay\u0131t \u00f6nce denenir. Di\u011ferleri yedek gibi davran\u0131r.<\/li>\n<li><strong>weight (a\u011f\u0131rl\u0131k)<\/strong>: Ayn\u0131 \u00f6nceli\u011fe sahip kay\u0131tlar aras\u0131nda y\u00fck da\u011f\u0131l\u0131m\u0131n\u0131 belirler. \u00d6rne\u011fin biri 60, di\u011feri 40 ise isteklerin yakla\u015f\u0131k %60\u2019\u0131 birinciye, %40\u2019\u0131 ikinciye gider.<\/li>\n<\/ul>\n<p>SRV kay\u0131tlar\u0131 \u00e7o\u011fu web projesinde do\u011frudan kullan\u0131lmasa da, VoIP sistemleri, chat altyap\u0131lar\u0131 veya baz\u0131 kurumsal e-posta istemcileri i\u00e7in kritiktir. SRV kay\u0131tlar\u0131n\u0131z\u0131n hedefi olan host\u2019lar i\u00e7in mutlaka ge\u00e7erli A\/AAAA kay\u0131tlar\u0131 da tan\u0131mlamay\u0131 unutmay\u0131n.<\/p>\n<h2><span id=\"CAA_Kaydi_SSL_Sertifikasi_Guvenlik_Katmani\">CAA Kayd\u0131: SSL Sertifikas\u0131 G\u00fcvenlik Katman\u0131<\/span><\/h2>\n<h3><span id=\"CAA_kaydi_nedir\">CAA kayd\u0131 nedir?<\/span><\/h3>\n<p><strong>CAA (Certification Authority Authorization) kayd\u0131<\/strong>, alan ad\u0131n\u0131z i\u00e7in hangi sertifika otoritelerinin (CA) SSL\/TLS sertifikas\u0131 \u00fcretebilece\u011fini belirler. Varsay\u0131lan durumda herhangi bir CAA kayd\u0131n\u0131z yoksa, t\u00fcm CA\u2019lar sertifika verebilir. CAA ekledi\u011finiz anda liste d\u0131\u015f\u0131 CA\u2019lar\u0131n sertifika \u00fcretmesi engellenir.<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">@ 3600 IN CAA 0 issue &quot;letsencrypt.org&quot;<\/code><\/pre>\n<p>Bu \u00f6rnekte sadece <strong>letsencrypt.org<\/strong> alan ad\u0131n\u0131z i\u00e7in sertifika \u00fcretebilir. Ba\u015fka bir CA \u00fczerinden sertifika almak isterseniz, o CA\u2019y\u0131 da CAA kay\u0131tlar\u0131n\u0131za eklemeniz gerekir.<\/p>\n<h3><span id=\"CAA_kayit_turleri\">CAA kay\u0131t t\u00fcrleri<\/span><\/h3>\n<ul>\n<li><strong>issue<\/strong>: Bu CA, alan ad\u0131 i\u00e7in sertifika \u00fcretebilir.<\/li>\n<li><strong>issuewild<\/strong>: Bu CA, wildcard sertifikas\u0131 (\u00f6r. <code>*.example.com<\/code>) \u00fcretebilir.<\/li>\n<li><strong>iodef<\/strong>: Yetkisiz sertifika giri\u015fimleri konusunda raporlar\u0131n g\u00f6nderilece\u011fi e-posta veya URL\u2019yi belirtir.<\/li>\n<\/ul>\n<pre class=\"language-python line-numbers\"><code class=\"language-python\">@ 3600 IN CAA 0 issue &quot;letsencrypt.org&quot;\n@ 3600 IN CAA 0 issue &quot;digicert.com&quot;\n@ 3600 IN CAA 0 iodef &quot;mailto:security@example.com&quot;<\/code><\/pre>\n<p>CAA kay\u0131tlar\u0131 konusunda daha derin bir g\u00fcvenlik ve \u00e7oklu-CA stratejisi kurmak istiyorsan\u0131z, <a href=\"https:\/\/www.dchost.com\/blog\/caa-kayitlari-derinlemesine-neden-nasil-ve-ne-zaman-coklu%e2%80%91caya-gecmelisin\/\">CAA kay\u0131tlar\u0131n\u0131 derinlemesine inceledi\u011fimiz makaleyi<\/a> ayr\u0131ca tavsiye ederiz.<\/p>\n<h3><span id=\"CAA_kullanirken_dikkat_edilmesi_gerekenler\">CAA kullan\u0131rken dikkat edilmesi gerekenler<\/span><\/h3>\n<ul>\n<li><strong>Yanl\u0131\u015f veya eksik CA ad\u0131<\/strong>: Sertifika almak istedi\u011finiz CA\u2019n\u0131n dok\u00fcmantasyonunda ge\u00e7en tam domain ad\u0131n\u0131 kullan\u0131n.<\/li>\n<li><strong>Wildcard i\u00e7in issuewild<\/strong>: Sadece <code>issue<\/code> yetkisi wildcard sertifika i\u00e7in her zaman yeterli olmayabilir; CA\u2019n\u0131z\u0131n gereksinimlerini kontrol edin.<\/li>\n<li><strong>Otomasyonla uyum<\/strong>: ACME tabanl\u0131 sertifika otomasyon ara\u00e7lar\u0131 (Let\u2019s Encrypt vb.) ile CAA kay\u0131tlar\u0131n\u0131z\u0131n uyumlu oldu\u011fundan emin olun.<\/li>\n<\/ul>\n<h2><span id=\"DNS_Degisiklikleri_TTL_ve_Yayilim_Suresi\">DNS De\u011fi\u015fiklikleri, TTL ve Yay\u0131l\u0131m S\u00fcresi<\/span><\/h2>\n<p>DNS kay\u0131tlar\u0131n\u0131z\u0131 de\u011fi\u015ftirdi\u011finizde, hemen her yerde ayn\u0131 anda etkisini g\u00f6rmezsiniz. Bunun sebebi, resolver\u2019lar\u0131n TTL s\u00fcresi boyunca eski kayd\u0131 \u00f6nbellekten kullanmaya devam etmesidir. \u00d6zellikle:<\/p>\n<ul>\n<li>Yeni sunucuya ta\u015f\u0131n\u0131rken A\/AAAA kay\u0131tlar\u0131,<\/li>\n<li>E-posta altyap\u0131s\u0131n\u0131 de\u011fi\u015ftirirken MX, SPF, DKIM, DMARC kay\u0131tlar\u0131,<\/li>\n<li>SSL sertifika sa\u011flay\u0131c\u0131s\u0131n\u0131 de\u011fi\u015ftirirken CAA kay\u0131tlar\u0131<\/li>\n<\/ul>\n<p>i\u00e7in TTL stratejisinin ba\u015ftan planlanmas\u0131 kritik \u00f6nem ta\u015f\u0131r. De\u011fi\u015fikli\u011fe gidece\u011finiz d\u00f6nem \u00f6ncesinde TTL\u2019i 300\u2013600 saniye gibi de\u011ferlere \u00e7ekip, ge\u00e7i\u015f tamamland\u0131ktan sonra tekrar daha y\u00fcksek bir de\u011fere almay\u0131 d\u00fc\u015f\u00fcnebilirsiniz.<\/p>\n<p>DNS yay\u0131l\u0131m\u0131n\u0131n neden bazen 24 saate kadar uzayabildi\u011fini ve bunu hangi noktalarda h\u0131zland\u0131rabilece\u011finizi daha iyi anlamak i\u00e7in, <a href=\"https:\/\/www.dchost.com\/blog\/dns-yayilim-suresi-nedir-neden-24-saat-surer-ve-nasil-hizlandirilir\/\">DNS yay\u0131l\u0131m s\u00fcresini anlatt\u0131\u011f\u0131m\u0131z rehbere<\/a> mutlaka g\u00f6z at\u0131n.<\/p>\n<h2><span id=\"Yeni_Bir_Proje_Icin_Ornek_DNS_Taslagi\">Yeni Bir Proje \u0130\u00e7in \u00d6rnek DNS Tasla\u011f\u0131<\/span><\/h2>\n<p>Diyelim ki DCHost \u00fczerinde yeni bir VPS veya <a href=\"https:\/\/www.dchost.com\/tr\/web-hosting\">payla\u015f\u0131ml\u0131 hosting<\/a> paketi a\u00e7t\u0131n\u0131z ve <strong>example.com<\/strong> alan ad\u0131n\u0131z\u0131 bu altyap\u0131ya ba\u011flayacaks\u0131n\u0131z. Basit ama sa\u011fl\u0131kl\u0131 bir ba\u015flang\u0131\u00e7 \u015femas\u0131 \u015f\u00f6yle olabilir:<\/p>\n<pre class=\"language-bash line-numbers\"><code class=\"language-bash\">; Web sitesi\n@      300  IN  A      203.0.113.10\nwww    300  IN  CNAME  example.com.\n\n; IPv6\n@      300  IN  AAAA   2001:db8::10\n\n; E-posta\nmail   300  IN  A      203.0.113.20\n@      300  IN  MX     10 mail.example.com.\n@      300  IN  TXT    &quot;v=spf1 a mx -all&quot;\n_dmarc 300  IN  TXT    &quot;v=DMARC1; p=quarantine; rua=mailto:dmarc@example.com&quot;\n\n; G\u00fcvenlik\n@      300  IN  CAA    0 issue &quot;letsencrypt.org&quot;<\/code><\/pre>\n<p>Buna ek olarak, CDN, API sunucular\u0131, admin paneli gibi bile\u015fenleri projeye g\u00f6re alt alan adlar\u0131yla ve gerekirse ek A\/AAAA\/CNAME kay\u0131tlar\u0131yla geni\u015fletebilirsiniz. Birden fazla m\u00fc\u015fteri veya marka y\u00f6netiyorsan\u0131z, DNS kay\u0131tlar\u0131n\u0131z\u0131 d\u00fczenli ve d\u00f6k\u00fcmante tutmak kritik \u00f6nem ta\u015f\u0131yor; bu noktada <a href=\"https:\/\/www.dchost.com\/blog\/ajanslar-icin-yeni-musteri-hosting-ve-dns-altyapisi-kontrol-listesi\/\">ajanslar i\u00e7in haz\u0131rlad\u0131\u011f\u0131m\u0131z hosting ve DNS altyap\u0131s\u0131 kontrol listesi<\/a> i\u015finizi ciddi anlamda kolayla\u015ft\u0131rabilir.<\/p>\n<h2><span id=\"DCHost_Tarafinda_DNS_Yonetimini_Nasil_Dusunmelisiniz\">DCHost Taraf\u0131nda DNS Y\u00f6netimini Nas\u0131l D\u00fc\u015f\u00fcnmelisiniz?<\/span><\/h2>\n<p>DCHost olarak hem domain hem de hosting\/vps\/dedicated\/colocation hizmetlerinde DNS\u2019i mimarinin merkezi bir par\u00e7as\u0131 olarak ele al\u0131yoruz. Pratik \u00f6neriler:<\/p>\n<ul>\n<li><strong>\u00d6nce DNS tasar\u0131m\u0131n\u0131 planlay\u0131n<\/strong>: Hangi alt alan adlar\u0131n\u0131n hangi sunuculara gidece\u011fini, ileride CDN veya e-posta servisi de\u011fi\u015fikliklerini nas\u0131l yapaca\u011f\u0131n\u0131z\u0131 ka\u011f\u0131t \u00fczerinde netle\u015ftirin.<\/li>\n<li><strong>De\u011fi\u015fiklikleri k\u00fc\u00e7\u00fck ad\u0131mlarla yap\u0131n<\/strong>: A\/AAAA, MX, TXT, CAA gibi kritik kay\u0131tlar\u0131 tek seferde toplu g\u00fcncellemek yerine, her ad\u0131mda test ederek ilerleyin.<\/li>\n<li><strong>Test i\u00e7in ek alanlar kullan\u0131n<\/strong>: \u00d6rne\u011fin <code>test.example.com<\/code> veya <code>staging.example.com<\/code> gibi alanlarda \u00f6nce deneme yapmak, canl\u0131 ortamda riskinizi azalt\u0131r.<\/li>\n<li><strong>Log ve izleme ile do\u011frulay\u0131n<\/strong>: Web ve e-posta loglar\u0131n\u0131, DNS sorgu sonu\u00e7lar\u0131yla birlikte de\u011ferlendirerek sorun an\u0131nda nerede hata oldu\u011funu h\u0131zla tespit edebilirsiniz.<\/li>\n<\/ul>\n<h2><span id=\"Ozet_ve_Sonraki_Adimlar\">\u00d6zet ve Sonraki Ad\u0131mlar<\/span><\/h2>\n<p>Bu rehberde A, AAAA, MX, CNAME, TXT, SRV ve CAA kay\u0131tlar\u0131n\u0131n ne i\u015fe yarad\u0131\u011f\u0131n\u0131; hangi durumda hangisini se\u00e7meniz gerekti\u011fini, pratik \u00f6rneklerle birlikte ele ald\u0131k. DNS\u2019in g\u00fcc\u00fc, basit g\u00f6r\u00fcnen birka\u00e7 sat\u0131r\u0131n, t\u00fcm web ve e-posta trafi\u011finizin kaderini belirlemesinden geliyor. Yanl\u0131\u015f yap\u0131land\u0131r\u0131lm\u0131\u015f bir A veya MX kayd\u0131, saatlerce s\u00fcren eri\u015fim ve ileti\u015fim sorunlar\u0131na yol a\u00e7abilir; do\u011fru tasarlanm\u0131\u015f bir kay\u0131t dizisi ise y\u0131llarca d\u00fczg\u00fcn ve sessizce \u00e7al\u0131\u015f\u0131r.<\/p>\n<p>E\u011fer mevcut DNS yap\u0131land\u0131rman\u0131z\u0131 g\u00f6zden ge\u00e7irmek, yeni bir projeyi DCHost altyap\u0131s\u0131na ta\u015f\u0131mak veya \u00e7oklu alan adl\u0131 daha karma\u015f\u0131k bir mimari kurmak istiyorsan\u0131z, bu yaz\u0131y\u0131 bir kontrol listesi gibi kullanabilirsiniz. Daha detayl\u0131 senaryolar i\u00e7in <a href=\"https:\/\/www.dchost.com\/blog\/dns-kayitlari-nedir-a-aaaa-cname-mx-txt-ve-srv-rehberi\/\">genel DNS kay\u0131t rehberimize<\/a> ve ba\u011flant\u0131 verdi\u011fimiz di\u011fer yaz\u0131lara da mutlaka g\u00f6z at\u0131n. Tak\u0131ld\u0131\u011f\u0131n\u0131z noktada DCHost destek ekibi, DNS kay\u0131tlar\u0131n\u0131z\u0131 birlikte \u00fczerinden ge\u00e7mek ve projenize en uygun yap\u0131y\u0131 kurmak i\u00e7in her zaman yan\u0131n\u0131zda.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Alan ad\u0131n\u0131z\u0131 sat\u0131n ald\u0131n\u0131z, hostinginizi veya sunucunuzu kurdunuz, s\u0131ra geldi her \u015feyi birbirine ba\u011flayan katmana: DNS kay\u0131tlar\u0131. Panelde kar\u015f\u0131n\u0131za \u00e7\u0131kan A, AAAA, MX, CNAME, TXT, SRV, CAA gibi k\u0131saltmalar ilk bak\u0131\u015fta karma\u015f\u0131k g\u00f6r\u00fcnebilir; ancak mant\u0131\u011f\u0131n\u0131 bir kez oturttu\u011funuzda hem web sitenizi hem de e-posta altyap\u0131n\u0131z\u0131 \u00e7ok daha kontroll\u00fc \u015fekilde y\u00f6netebilirsiniz. DCHost ekibinde g\u00fcnl\u00fck i\u015fimizin \u00f6nemli [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4951,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-4950","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\/4950","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=4950"}],"version-history":[{"count":0,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/4950\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media\/4951"}],"wp:attachment":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media?parent=4950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/categories?post=4950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/tags?post=4950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}