{"id":1219,"date":"2021-02-20T15:29:32","date_gmt":"2021-02-20T12:29:32","guid":{"rendered":"https:\/\/uzmanposta.com\/blog\/?p=1219"},"modified":"2025-05-10T23:53:23","modified_gmt":"2025-05-10T20:53:23","slug":"dns-nedir-dns-ayarlari-degistirme","status":"publish","type":"post","link":"https:\/\/uzmanposta.com\/blog\/dns-nedir-dns-ayarlari-degistirme\/","title":{"rendered":"DNS Nedir, DNS Ayarlar\u0131 Nas\u0131l De\u011fi\u015ftirilir?"},"content":{"rendered":"\n\n\n<p>\u00c7o\u011fu internet kullan\u0131c\u0131s\u0131 fark\u0131nda olmadan taray\u0131c\u0131lar\u0131n\u0131 her a\u00e7t\u0131klar\u0131nda DNS ile kar\u015f\u0131la\u015f\u0131r. Bir web sitesine gitmek istediklerinde, yazd\u0131klar\u0131 adres arka planda DNS sistemi taraf\u0131ndan say\u0131sal bir IP adresine \u00e7evrilir. Bu s\u00fcre\u00e7 yaln\u0131zca birka\u00e7 milisaniye i\u00e7inde ger\u00e7ekle\u015fir ve kullan\u0131c\u0131ya fark ettirmeden internet deneyiminin temel ta\u015flar\u0131ndan birini olu\u015fturur. DNS olmasayd\u0131, her siteye eri\u015fmek i\u00e7in karma\u015f\u0131k IP numaralar\u0131 ezberlemek gerekirdi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS Nedir?<\/h2>\n\n\n\n<p>Domain Name System (DNS) yani Alan Ad\u0131 Sistemi, insanlar taraf\u0131ndan okunabilen alan adlar\u0131n\u0131 (URL&#8217;lerde veya e-posta adresinde) IP adresleriyle e\u015fler. \u00d6rne\u011fin, DNS, uzmanposta.com alan ad\u0131n\u0131 104.26.2.33 IP adresine \u00e7evirir ve e\u015fler. DNS, bir ana bilgisayar ad\u0131n\u0131 (\u00f6rn. www.uzmanposta.com) bilgisayar\u0131n anlayabilece\u011fi bir say\u0131 diline \u00e7evirir veya \u00e7\u00f6z\u00fcmler de diyebiliriz.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n\n\n\n<p>DNS&#8217;in nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 basit\u00e7e anlatmak gerekirse, bir kullan\u0131c\u0131 \u00f6nce internet taray\u0131c\u0131s\u0131na, www.uzmanposta.com gibi bir web sitesi ad\u0131 yazar ve ard\u0131ndan web sitesi g\u00f6r\u00fcnt\u00fclenir.<\/p>\n\n\n\n<p>Bu, temelde bir web sitesini g\u00f6r\u00fcnt\u00fclemek veya ona eri\u015fmek i\u00e7in &#8220;kullan\u0131c\u0131 iste\u011fi&#8221; olarak adland\u0131rd\u0131\u011f\u0131m\u0131z \u015feydir. \u0130stek g\u00f6nderildikten sonra bilgisayar \u00f6nce yerel DNS \u00f6nbelle\u011finde bulunan IP adresini arar. Ba\u015far\u0131l\u0131 olursa, web sitesini hemen kullan\u0131c\u0131ya g\u00f6sterir.<\/p>\n\n\n\n<p>IP adresini bulamazsa, arama sorgusu IP adresini denemek ve almak i\u00e7in ISS (\u0130nternet Servis Sa\u011flay\u0131c\u0131s\u0131) taraf\u0131ndan sa\u011flanan \u00f6zyinelemeli sunucuya gider. IP adresi do\u011fru bir \u015fekilde yerle\u015ftirilmi\u015fse, web sitesi kullan\u0131c\u0131ya g\u00f6sterilir.<\/p>\n\n\n\n<p>ISS genellikle m\u00fc\u015fterileri taraf\u0131ndan s\u0131kl\u0131kla eri\u015filen IP adreslerinin bir \u00f6nbelle\u011fini tutar (\u00f6r. Facebook veya Youtube gibi yayg\u0131n g\u00f6r\u00fcnt\u00fclenen web siteleri). Bu nedenle istenen web sitelerini bulma \u015fans\u0131 olduk\u00e7a y\u00fcksektir.<\/p>\n\n\n\n<p>IP adresi bulunamazsa, yinelemeli sunucu sorguyu root ad sunucusuna y\u00f6nlendirir. Burada bulunursa, web sitesi g\u00f6r\u00fcnt\u00fclenir. Bulunamazsa, kullan\u0131c\u0131 sorgusu TLD ad sunucusuna gider ve hala bulunamazsa, sorgunun gitti\u011fi son hedef yetkili ad sunucusu olur. Buras\u0131 IP adresinin bulunaca\u011f\u0131, web sitesinin al\u0131naca\u011f\u0131 ve kullan\u0131c\u0131ya g\u00f6sterilece\u011fi yerdir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS T\u00fcrleri<\/h2>\n\n\n\n<p>DNS \u00e7\u00f6z\u00fcmleme s\u00fcrecine dahil olan d\u00f6rt farkl\u0131 sunucu t\u00fcr\u00fc vard\u0131r. Bunlar a\u015fa\u011f\u0131dakileri i\u00e7erir:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Yetkili DNS Ad Sunucusu<\/h3>\n\n\n\n<p>Yetkili bir DNS hizmeti, geli\u015ftiricilerin genel DNS adlar\u0131n\u0131 y\u00f6netmek i\u00e7in kulland\u0131klar\u0131 bir g\u00fcncelleme mekanizmas\u0131 sa\u011flar. Daha sonra DNS sorgular\u0131n\u0131 yan\u0131tlayarak alan adlar\u0131n\u0131 IP adresine \u00e7evirir, b\u00f6ylece bilgisayarlar birbirleriyle ileti\u015fim kurabilir. Yetkili DNS, bir alan ad\u0131 \u00fczerinde nihai yetkiye sahiptir ve IP adres bilgileriyle \u00f6zyinelemeli DNS sunucular\u0131na yan\u0131tlar sa\u011flamaktan sorumludur.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. DNS Recursion (\u00d6z Yineleyici DNS)\u00a0<\/h3>\n\n\n\n<p>\u0130stemciler genellikle do\u011frudan yetkili DNS hizmetlerine sorgu yapmazlar. Bunun yerine, genellikle bir \u00e7\u00f6z\u00fcmleyici olarak bilinen ba\u015fka bir DNS hizmetine veya \u00f6zyinelemeli bir DNS hizmetine ba\u011flan\u0131rlar. Yinelemeli bir DNS hizmeti, bir otel g\u00f6revlisi gibi davran\u0131r: Herhangi bir DNS kayd\u0131na sahip olmasa da, DNS bilgilerini sizin ad\u0131n\u0131za alabilecek bir arac\u0131 g\u00f6revi g\u00f6r\u00fcr. \u00d6zyinelemeli bir DNS, DNS referans\u0131n\u0131 \u00f6nbelle\u011fe alm\u0131\u015fsa veya belirli bir s\u00fcre saklanm\u0131\u015fsa, kaynak veya IP bilgilerini sa\u011flayarak DNS sorgusunu yan\u0131tlar. De\u011filse, bilgiyi bulmak i\u00e7in sorguyu bir veya daha fazla yetkili DNS sunucusuna iletir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Root (K\u00f6k) DNS sunucular<\/h3>\n\n\n\n<p>Root DNS sunucusu, DNS hiyerar\u015fisinin en \u00fcst\u00fcnde yer al\u0131r ve .com, .net, .org gibi \u00fcst d\u00fczey alan adlar\u0131 (TLD&#8217;ler) i\u00e7in yetkili sunucular\u0131n konumu hakk\u0131nda bilgi sa\u011flama i\u015flevi g\u00f6r\u00fcr.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. DNS \u00dcst D\u00fczey Alan Ad\u0131 (TLD) Sunucular\u0131<\/h3>\n\n\n\n<p>DNS TLD sunucular\u0131 .com, .net, .org ve benzeri \u00fcst d\u00fczey alan adlar\u0131ndan sorumludur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS Ayarlar\u0131 Nas\u0131l De\u011fi\u015ftirilir?<\/h2>\n\n\n\n<p>Ba\u011fland\u0131\u011f\u0131n\u0131z her a\u011f ve her cihaz i\u00e7in yapman\u0131z gerekmese de, DNS ayarlar\u0131n\u0131z\u0131 de\u011fi\u015ftirmek olduk\u00e7a kolayd\u0131r. \u015eimdi ad\u0131m ad\u0131m Windows, MacOs, Andorid, iOS ve iPadOS&#8217;de DNS ayarlar\u0131 nas\u0131l de\u011fi\u015ftirilir, bunlara g\u00f6z atal\u0131m. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Windows\u2019ta DNS Ayarlar\u0131n\u0131 De\u011fi\u015ftirme<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>Windows\u2019ta, Ba\u015flat men\u00fcs\u00fcn\u00fcn solundaki di\u015fli simgesi arac\u0131l\u0131\u011f\u0131yla <strong>Ayarlar<\/strong> panelini a\u00e7\u0131n.<\/li><li>Yeni ayarlar sayfas\u0131 a\u00e7\u0131ld\u0131\u011f\u0131nda &#8220;<strong>A\u011f ve \u0130nternet (Wi-Fi, u\u00e7ak modu, VPN<\/strong>)&#8221; \u00fczerine t\u0131klay\u0131n.<\/li><li><strong>A\u011f ve Payla\u015f\u0131m Merkezi<\/strong> sayfas\u0131 a\u00e7\u0131ld\u0131\u011f\u0131nda, <strong>Ethernet <\/strong>\u00fczerine t\u0131klay\u0131n. Kablosuz a\u011f kullan\u0131yorsan\u0131z <strong>Wifi veya Kablosuz A\u011f<\/strong> yazacakt\u0131r.<\/li><li>Wifi ba\u011flant\u0131n\u0131za sa\u011f t\u0131klay\u0131n, <strong>\u00d6zellikler<\/strong>&#8216;i se\u00e7in ve ard\u0131ndan a\u015fa\u011f\u0131 kayd\u0131r\u0131p <strong>\u0130nternet Protokol\u00fc S\u00fcr\u00fcm\u00fc 4 (TCP\/IPv4)\u2019\u00fc se\u00e7in<\/strong> se\u00e7in.\u00a0<\/li><li>Ard\u0131ndan a\u015fa\u011f\u0131daki DNS sunucu adreslerini kullan arac\u0131l\u0131\u011f\u0131yla yeni adresler belirleyin.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">MacOS\u2019de DNS Ayarlar\u0131n\u0131 De\u011fi\u015ftirme<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>Apple men\u00fcs\u00fcnden <strong>Sistem Tercihleri<\/strong>&#8216;ni a\u00e7\u0131n.<\/li><li>Ard\u0131ndan<strong> A\u011f&#8217;<\/strong>\u0131 t\u0131klay\u0131n. Wifi ba\u011flant\u0131n\u0131z\u0131 se\u00e7in, <strong>\u0130leri D\u00fczey<\/strong>\u2019i se\u00e7in ve ard\u0131ndan <strong>DNS<\/strong> sekmesine ge\u00e7in.\u00a0<\/li><li>A\u015fa\u011f\u0131da listeledi\u011fimiz se\u00e7eneklerden hem birincil hem de ikincil sunucular\u0131 eklemek i\u00e7in <strong>DNS Sunucular\u0131<\/strong> alt\u0131ndaki <strong>Art\u0131 d\u00fc\u011fmelerini<\/strong> kullan\u0131n ve ard\u0131ndan ileti\u015fim kutular\u0131n\u0131 kapat\u0131n.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"722\" height=\"557\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/macosede-dns-ayarlarini-degistirme.png\" alt=\"\" class=\"wp-image-1225\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/macosede-dns-ayarlarini-degistirme.png 722w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/macosede-dns-ayarlarini-degistirme-300x231.png 300w\" sizes=\"(max-width: 722px) 100vw, 722px\" \/><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Android DNS Ayarlar\u0131n\u0131 De\u011fi\u015ftirme<\/h3>\n\n\n\n<p>Android 9 veya sonraki bir s\u00fcr\u00fcm\u00fcn\u00fc kulland\u0131\u011f\u0131n\u0131z s\u00fcrece, <strong>Ayarlar<\/strong>&#8216;a gidip <strong>A\u011f ve \u0130nternet<\/strong>, <strong>Geli\u015fmi\u015f ve \u00d6zel DNS&#8217;<\/strong>yi de se\u00e7ebilirsiniz.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">iOS ve iPadOS&#8217;de DNS Ayarlar\u0131n\u0131 De\u011fi\u015ftirme&nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Ayarlar<\/strong>\u2019\u0131 a\u00e7\u0131p ard\u0131ndan <strong>Wi-Fi<\/strong>&#8216;ye ve ard\u0131ndan ba\u011fl\u0131 oldu\u011funuz a\u011fa dokunarak ilgili ekran\u0131 bulabilirsiniz.\u00a0<\/li><li><strong>DNS\u2019yi Ayarla\u2019<\/strong>y\u0131 se\u00e7in, <strong>Elle\u2019<\/strong>ye dokunun ve <strong>Sunucu Ekle<\/strong> d\u00fc\u011fmesi arac\u0131l\u0131\u011f\u0131yla birincil ve ikincil sunucular\u0131 ekleyin.\u00a0<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"750\" height=\"375\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/ios-ve-ipadosde-dns-ayarlarini-degistirme.png\" alt=\"\" class=\"wp-image-1227\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/ios-ve-ipadosde-dns-ayarlarini-degistirme.png 750w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/ios-ve-ipadosde-dns-ayarlarini-degistirme-300x150.png 300w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/ios-ve-ipadosde-dns-ayarlarini-degistirme-360x180.png 360w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\"><li>Mevcut sunucular\u0131 silmek i\u00e7in k\u0131rm\u0131z\u0131 Eksi d\u00fc\u011fmelerini kullan\u0131n ve kaydetti\u011finizde, yeni DNS yap\u0131land\u0131rman\u0131z\u0131 kullanmaya haz\u0131rs\u0131n\u0131z.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Email DNS Nedir?<\/h2>\n\n\n\n<p>Bir e-posta adresi, &#8220;@&#8221; i\u015faretinden sonra gelen alan ad\u0131yla ili\u015fkilidir ve bu alan ad\u0131, e-postan\u0131n do\u011fru \u015fekilde y\u00f6nlendirilmesi i\u00e7in bir IP adresine \u00e7evrilmelidir. Bu e\u015fle\u015ftirme s\u00fcrecinde\u00a0DNS (Alan Ad\u0131 Sistemi)\u00a0devreye girer. Mail sunucusu, al\u0131c\u0131n\u0131n adresine ula\u015fmak i\u00e7in DNS \u00fczerinden ilgili IP\u2019yi sorgular ve e-postay\u0131 do\u011fru sunucuya iletir.<\/p>\n\n\n\n<p>DNS, sadece y\u00f6nlendirme i\u00e7in de\u011fil,\u00a0e-posta g\u00fcvenli\u011fi\u00a0i\u00e7in de kritik rol oynar. <\/p>\n\n\n\n<p>\u00d6rnek:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>SPF (Sender Policy Framework)\u00a0kay\u0131tlar\u0131 sayesinde belirli sunucular\u0131n sizin ad\u0131n\u0131za e-posta g\u00f6ndermesine izin verilir.<\/li><li>DKIM (DomainKeys Identified Mail)\u00a0imzas\u0131n\u0131n do\u011frulanmas\u0131nda kullan\u0131lan genel anahtar da DNS kay\u0131tlar\u0131nda saklan\u0131r.<\/li><li>Ayr\u0131ca,\u00a0DMARC\u00a0politikalar\u0131 da yine DNS \u00fczerinde tan\u0131mlanarak sahte e-posta kullan\u0131m\u0131n\u0131 \u00f6nlemeye yard\u0131mc\u0131 olur.<\/li><\/ul>\n\n\n\n<p>K\u0131sacas\u0131, DNS kay\u0131tlar\u0131; bir e-postan\u0131n teslim edilmesini sa\u011flamakla kalmaz, ayn\u0131 zamanda g\u00f6nderenin kimli\u011fini do\u011frulamak ve sahtecilik risklerini azaltmak i\u00e7in de temel bir altyap\u0131 sunar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS TXT Nedir?<\/h2>\n\n\n\n<p>A\u00e7\u0131l\u0131m\u0131 &#8221;Text Record&#8221; olan DNS TXT kayd\u0131, metinsel bilgiler i\u00e7eren bir DNS kayd\u0131 t\u00fcr\u00fcd\u00fcr. Bu kay\u0131tlar bir alan ad\u0131na ek bilgi eklemek i\u00e7in kullan\u0131l\u0131r ve bu bilgiler rastgele metinden yap\u0131land\u0131r\u0131lm\u0131\u015f verilere kadar de\u011fi\u015febilir. DNS TXT kay\u0131tlar\u0131 a\u015fa\u011f\u0131dakiler de dahil olmak \u00fczere \u00e7e\u015fitli ama\u00e7lar i\u00e7in kullan\u0131labilir:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>SPF (Sender Policy Framework): <\/strong>SPF, bir e-posta sisteminin belirli bir alan\u0131 ad\u0131na e-posta g\u00f6nderme yetkisine sahip oldu\u011funu do\u011frulamak i\u00e7in kullan\u0131lan bir e-posta do\u011frulama protokol\u00fcd\u00fcr. SPF kay\u0131tlar\u0131 genellikle DNS TXT kay\u0131tlar\u0131na dahil edilir.<\/li><li><strong>DKIM (DomainKeys Identified Mail):<\/strong> DKIM, e-postalar\u0131n b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc sa\u011flamak i\u00e7in dijital imzalar kullanan bir ba\u015fka e-posta kimlik do\u011frulama protokol\u00fcd\u00fcr. DKIM anahtarlar\u0131 bazen DNS TXT kay\u0131tlar\u0131nda saklan\u0131r.<\/li><li><strong>DMARC (Domain-based Message Authentication, Reporting, and Conformance):<\/strong> DMARC, SPF ve DKIM kay\u0131tlar\u0131n\u0131 birle\u015ftirebilen ve e-posta kimlik do\u011frulama ilkelerini tan\u0131mlayabilen bir e-posta kimlik do\u011frulama standard\u0131d\u0131r. DMARC ilkeleri DNS TXT kay\u0131tlar\u0131na da dahil edilebilir.<\/li><li><strong>Hizmetler ve uygulamalar i\u00e7in do\u011frulama:<\/strong> DNS TXT kay\u0131tlar\u0131 genellikle alan adlar\u0131n\u0131n sahipli\u011fini do\u011frulamak ve Google Workspace, Microsoft 365 ve di\u011ferleri gibi hizmetler i\u00e7in g\u00fcvenlik anahtarlar\u0131n\u0131 ayarlamak i\u00e7in kullan\u0131l\u0131r.<\/li><li><strong>Bilgi yay\u0131n\u0131:<\/strong> Kurumlar, kurulu\u015flar\u0131 veya hizmetleri hakk\u0131nda konumlar, ileti\u015fim bilgileri ve politika bilgileri gibi ek bilgileri yay\u0131nlamak i\u00e7in DNS TXT kay\u0131tlar\u0131n\u0131 kullanabilir.<\/li><\/ul>\n\n\n\n<p>SPF, DKIM ve DMARC kay\u0131tlar\u0131 sorunsuz bir \u015fekilde posta g\u00f6nderebilmek i\u00e7in \u00f6nemlidir.&nbsp;<\/p>\n\n\n\n<p>Bir DNS TXT kayd\u0131 bir alan ad\u0131, bir Ya\u015fama S\u00fcresi (TTL) de\u011feri ve kayd\u0131n metin i\u00e7eri\u011finden olu\u015fur. Metin i\u00e7eri\u011fi rastgele metinlerden veya anahtar-de\u011fer \u00e7iftleri \u015feklinde yap\u0131land\u0131r\u0131lm\u0131\u015f verilerden olu\u015fabilir. DNS TXT kay\u0131tlar\u0131n\u0131n b\u00fcy\u00fck miktarda veri depolamak i\u00e7in de\u011fil, DNS ile ilgili kimlik do\u011frulama ve yetkilendirme i\u00e7in \u00f6nemli olan k\u00fc\u00e7\u00fck bilgi par\u00e7alar\u0131n\u0131 depolamak i\u00e7in tasarland\u0131\u011f\u0131n\u0131 unutmaman\u0131z \u00f6nemlidir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pop\u00fcler DNS Sa\u011flay\u0131c\u0131lar\u0131<\/h2>\n\n\n\n<p>En pop\u00fcler, g\u00fcvenilir ve kullan\u0131m\u0131 kolay alternatif DNS sa\u011flay\u0131c\u0131lar\u0131ndan d\u00f6rd\u00fc; Cloudflare, Google, Quad9 ve OpenDNS&#8217;dir. Sa\u011flad\u0131klar\u0131 faydalarda baz\u0131 farkl\u0131l\u0131klar olsa da, genel olarak benzerdir. Sizin i\u00e7in hangisinin en iyi oldu\u011funu g\u00f6rmek i\u00e7in hepsini deneyebilirsiniz.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Cloudflare<\/h3>\n\n\n\n<p>Cloudflare, sekt\u00f6rdeki en iyi bilinen isimdir. Hat\u0131rlaman\u0131z gereken IP adresleri 1.1.1.1 ve 1.0.0.1&#8217;dir (birincil ve ikincil). G\u00f6rece\u011finiz gibi bu numaralar\u0131 unutman\u0131z pek olas\u0131 de\u011fildir. Bu nedenle bu 2 adresten herhangi birini ziyaret ederek i\u015fe ba\u015flayabilirsiniz. \u00c7o\u011fu teste g\u00f6re, t\u00fcm DNS sa\u011flay\u0131c\u0131lar\u0131 aras\u0131nda en h\u0131zl\u0131s\u0131 Cloudflare&#8217;dir. Cloudflare ayr\u0131ca kullanabilece\u011finiz mobil uygulamalara da sahiptir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Google<\/h3>\n\n\n\n<p>Ard\u0131ndan, 8.8.8.8 ve 8.8.4.4 IP adreslerinde bulabilece\u011finiz Google&#8217;nin genel DNS&#8217;si var. Cloudflare gibi Google da, mevcut DNS sunucunuz \u00fczerinden h\u0131z ve g\u00fcvenli\u011fi art\u0131rma konusunda olduk\u00e7a iddial\u0131d\u0131r. IP g\u00fcnl\u00fckleri 48 saat i\u00e7inde silinir, ancak anonim veriler daha uzun s\u00fcre saklan\u0131r.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Quad9<\/h3>\n\n\n\n<p>Quad9, yeni DNS sa\u011flay\u0131c\u0131lar\u0131ndan bir di\u011feridir. Kullan\u0131c\u0131 gizlili\u011fi ve g\u00fcvenli\u011fi konusunda g\u00fc\u00e7l\u00fc bir duru\u015f sergiler. Hat\u0131rlaman\u0131z gereken IP adresleri 9.9.9.9 ve 149.112.112.112\u2019dir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. OpenDNS<\/h3>\n\n\n\n<p>OpenDNS, filtrelemeye ve \u00e7ocuk g\u00fcvenli\u011fine daha fazla odaklan\u0131r ve k\u00fc\u00e7\u00fck i\u015fletmeler i\u00e7in cazip hale gelmek i\u00e7in baz\u0131 \u00fccretli paketleri kar\u0131\u015f\u0131ma dahil eder. En uzun s\u00fcredir \u00e7al\u0131\u015fan DNS sa\u011flay\u0131c\u0131lar\u0131ndan biridir ve 2015 y\u0131l\u0131nda Cisco taraf\u0131ndan sat\u0131n al\u0131nm\u0131\u015ft\u0131r. \u00dccretsiz, kay\u0131t gerektirmeyen Family Shield paketinin IP adresleri 208.67.222.222 (birincil) ve 208.67.220.220 (ikincil) olsa da \u00e7o\u011fu paket i\u00e7in (\u00fccretsiz olanlar bile) \u00f6nce bir hesap a\u00e7man\u0131z gerekir.<\/p>\n\n\n\n<p>Hangisinin sizin i\u00e7in en iyi se\u00e7enek oldu\u011fu, d\u00fcnyan\u0131n neresinde oldu\u011funuza ve neye ihtiyac\u0131n\u0131z oldu\u011funa ba\u011fl\u0131 olarak de\u011fi\u015fir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Uzman Posta DNS Ayarlar\u0131 Nas\u0131l De\u011fi\u015ftirilir?<\/h2>\n\n\n\n<p>E-posta hesaplar\u0131n\u0131z\u0131n Uzman Posta servisleri \u00fczerinde \u00e7al\u0131\u015fabilmesi i\u00e7in alan ad\u0131n\u0131za ait DNS ayarlar\u0131n\u0131n uygun \u015fekilde d\u00fczenlenmesi gerekir.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. MX Kay\u0131tlar\u0131 \/ Zorunlu Kay\u0131t<\/h3>\n\n\n\n<p>Alan ad\u0131n\u0131za \u00f6zel e-posta hesaplar\u0131na mesajlar\u0131n ula\u015faca\u011f\u0131 takas sunuculara <strong>MX \u2013 Mail Exchanger<\/strong> ad\u0131 verilir. DNS sistemindeki bu sunucular, MX tipi sunucu kay\u0131tlar\u0131 ile d\u00fcnyadaki t\u00fcm di\u011fer e-posta sunucular\u0131na bildirilir. Eski MX kay\u0131tlar\u0131n\u0131z var ise silinir ve yap\u0131lan bu kay\u0131t sayesinde internet \u00fczerinden size g\u00f6nderilecek t\u00fcm mesajlar bizim taraf\u0131m\u0131zdan teslim al\u0131narak size ait e-posta hesap kutular\u0131na iletilir.<\/p>\n\n\n\n<p>Servislerimizi kullanabilmeniz i\u00e7in bu kay\u0131tlar\u0131 a\u015fa\u011f\u0131daki \u015fekilde d\u00fczenlemeniz gerekir:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"773\" height=\"146\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/mx-kayitlari-zorunlu-kayit.png\" alt=\"\" class=\"wp-image-1220\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/mx-kayitlari-zorunlu-kayit.png 773w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/mx-kayitlari-zorunlu-kayit-300x57.png 300w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/mx-kayitlari-zorunlu-kayit-768x145.png 768w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/mx-kayitlari-zorunlu-kayit-750x142.png 750w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">2. SPF Kay\u0131tlar\u0131 \/ Zorunlu Kay\u0131t<\/h3>\n\n\n\n<p>Mesaj g\u00f6nderdi\u011finizde bunlar\u0131 alan sunucular\u0131n mesaj\u0131n ger\u00e7ekten sizden geldi\u011fini kontrol etmesine yard\u0131mc\u0131 olmak i\u00e7in yani SPF-Sender Policy Framework&#8217;e uygunluk sa\u011flanmas\u0131 i\u00e7in yap\u0131l\u0131r. Alan ad\u0131n\u0131za ait mesajlar\u0131 hangi kaynak sunuculardan g\u00f6ndermekte oldu\u011funuzu DNS kay\u0131tlar\u0131n\u0131za bilgi olarak yazm\u0131\u015f olursunuz. Sizden mesaj alacak e-posta sunucular\u0131 bu bilgiyi size ait oldu\u011fundan emin olarak kontrol eder ve sizin mesaj g\u00f6ndermeyece\u011finiz farkl\u0131 kaynaklardan gelen mesajlar\u0131 kabul etmez. Bu kay\u0131tlar alan ad\u0131n\u0131z i\u00e7inde ve di\u011fer e-posta adresleri ile yapt\u0131\u011f\u0131n\u0131z yaz\u0131\u015fmalar\u0131n da sa\u011fl\u0131kl\u0131 bir \u015fekilde ger\u00e7ekle\u015fmesini sa\u011flar.<\/p>\n\n\n\n<p>Alan Ad\u0131 kay\u0131t tipi olarak TXT alan\u0131na bu kay\u0131t yaz\u0131l\u0131r. Eger hizmetlerimiz d\u0131\u015f\u0131nda bir ba\u015fka kaynaktan daha mesaj g\u00f6nderimi yap\u0131yorsan\u0131z, (\u00f6rne\u011fin bir ba\u015fka e-mail pazarlama firmas\u0131yla \u00e7al\u0131\u015f\u0131yor ve oradan da alan ad\u0131n\u0131z\u0131 i\u00e7eren mesajlar g\u00f6nderiyorsan\u0131z) bu kayd\u0131n o kaynak sunucular\u0131 da i\u00e7erecek \u015fekilde d\u00fczenlenmesini sa\u011flamal\u0131s\u0131n\u0131z.<\/p>\n\n\n\n<p>Yap\u0131lacak TXT Kay\u0131t i\u00e7eri\u011fini a\u015fa\u011f\u0131daki \u015fekilde d\u00fczenlemeniz gerekir:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"791\" height=\"108\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/spf-kayitlari-zorunlu-kayit-.png\" alt=\"\" class=\"wp-image-1222\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/spf-kayitlari-zorunlu-kayit-.png 791w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/spf-kayitlari-zorunlu-kayit--300x41.png 300w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/spf-kayitlari-zorunlu-kayit--768x105.png 768w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/spf-kayitlari-zorunlu-kayit--750x102.png 750w\" sizes=\"(max-width: 791px) 100vw, 791px\" \/><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">3. Alan Ad\u0131 Host tipi DNS Kay\u0131tlar\u0131<\/h3>\n\n\n\n<p>Kullanmakta oldu\u011funuz alan ad\u0131n\u0131 e-posta yaz\u0131l\u0131mlar\u0131na ayar yaparken kullanmak isterseniz (zorunlu olmamak \u015fart\u0131yla) alan ad\u0131n\u0131z\u0131n mail. ile ba\u015flayan host kay\u0131d\u0131n\u0131 a\u015fa\u011f\u0131daki \u015fekilde olu\u015fturabilirsiniz.<\/p>\n\n\n\n<p>Yap\u0131lacak CNAME kay\u0131t i\u00e7eri\u011fini a\u015fa\u011f\u0131daki \u015fekilde d\u00fczenlemeniz gerekir:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"793\" height=\"220\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/alan-adi-host-tipi-dns-kayitlari.png\" alt=\"\" class=\"wp-image-1223\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/alan-adi-host-tipi-dns-kayitlari.png 793w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/alan-adi-host-tipi-dns-kayitlari-300x83.png 300w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/alan-adi-host-tipi-dns-kayitlari-768x213.png 768w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/alan-adi-host-tipi-dns-kayitlari-750x208.png 750w\" sizes=\"(max-width: 793px) 100vw, 793px\" \/><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">4. Opsiyonel DNS Kay\u0131tlar\u0131<\/h3>\n\n\n\n<p>MS Outlook, Thunderbird ve mobil cihaz i\u015fletim sistemleri olan iOS ve Android e-posta yaz\u0131l\u0131mlar\u0131n\u0131n kolay kurulum yapabilmesi i\u00e7in&nbsp;DNS&nbsp;ayarlar\u0131 yap\u0131lmas\u0131 gerekir. Bu ayarlar\u0131n yap\u0131lmas\u0131 durumunda sadece e-posta adresi ve \u015fifre girmeniz, bu yaz\u0131l\u0131m ve cihazlara e-posta hesab\u0131n\u0131z\u0131n kolayca kurulumunu sa\u011flar. Zorunlu olmamak \u015fart\u0131 ile bu kay\u0131tlar\u0131n yap\u0131lmas\u0131n\u0131 tavsiye ederiz.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"744\" height=\"240\" src=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/opsiyonel-dns-kayitlari.png\" alt=\"\" class=\"wp-image-1224\" srcset=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/opsiyonel-dns-kayitlari.png 744w, https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/opsiyonel-dns-kayitlari-300x97.png 300w\" sizes=\"(max-width: 744px) 100vw, 744px\" \/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">DNS \u0130\u00e7in Gerekli Dosya T\u00fcrleri Nelerdir?<\/h2>\n\n\n\n<p>DNS sunucular\u0131n\u0131n sa\u011fl\u0131kl\u0131 bir \u015fekilde \u00e7al\u0131\u015fabilmesi ve alan adlar\u0131n\u0131n IP adresleriyle do\u011fru \u015fekilde e\u015fle\u015ftirilebilmesi i\u00e7in baz\u0131 temel dosya t\u00fcrlerine ihtiya\u00e7 vard\u0131r. Bu dosyalar, DNS sorgular\u0131n\u0131n y\u00f6netilmesinde ve yan\u0131tlanmas\u0131nda kritik rol oynar. Ba\u015fl\u0131ca DNS dosya t\u00fcrleri a\u015fa\u011f\u0131dakileri i\u00e7erir:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Boot Dosyas\u0131:<\/strong> DNS sunucusu ba\u015flat\u0131ld\u0131\u011f\u0131nda ilk olarak bu dosyay\u0131 okur. Sunucunun t\u00fcr\u00fcn\u00fc, g\u00f6rev alan\u0131n\u0131 ve y\u00f6netti\u011fi zone (b\u00f6lge) bilgilerini i\u00e7erir. DNS\u2019in temel yap\u0131land\u0131rmas\u0131n\u0131 belirler.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Local Dosyas\u0131:<\/strong> Sunucunun kendi yerel adreslerini tan\u0131yabilmesi i\u00e7in kullan\u0131l\u0131r. Genellikle\u00a0<code>localhost<\/code>\u00a0gibi sistem i\u00e7i adlar\u0131n \u00e7\u00f6z\u00fcmlenmesini sa\u011flar.<\/li><li><strong>named.ca Dosyas\u0131 (Root Server Dosyas\u0131):<\/strong> \u0130nternetin k\u00f6k DNS sunucular\u0131n\u0131n adreslerini bar\u0131nd\u0131r\u0131r. DNS sorgular\u0131n\u0131n hiyerar\u015fik yap\u0131da en \u00fcst seviyeye y\u00f6nlendirilmesini m\u00fcmk\u00fcn k\u0131lar.<\/li><li><strong>named.hosts Dosyas\u0131:<\/strong> Alan adlar\u0131yla IP adresleri aras\u0131ndaki do\u011frudan e\u015flemeleri i\u00e7erir. DNS sunucusunun hangi alan ad\u0131n\u0131 hangi IP\u2019ye y\u00f6nlendirece\u011fini belirler.<\/li><li><strong>named.reverse Dosyas\u0131:<\/strong> Ters DNS \u00e7\u00f6z\u00fcmlemesi i\u00e7in kullan\u0131l\u0131r. IP adreslerinden alan adlar\u0131na d\u00f6n\u00fc\u015f\u00fcm sa\u011flar. Bu \u00f6zellikle g\u00fcnl\u00fck analizlerinde ve e-posta sunucusu do\u011frulamalar\u0131nda \u00f6nemlidir.<\/li><\/ul>\n\n\n\n<p>Bu dosyalar\u0131n her biri DNS sisteminin farkl\u0131 bir bile\u015fenini y\u00f6netir. Eksik ya da hatal\u0131 olmalar\u0131 durumunda, alan ad\u0131 \u00e7\u00f6z\u00fcmlemesi yap\u0131lamaz ve DNS hizmeti \u00e7al\u0131\u015famaz hale gelir.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c7o\u011fu internet kullan\u0131c\u0131s\u0131 fark\u0131nda olmadan taray\u0131c\u0131lar\u0131n\u0131 her a\u00e7t\u0131klar\u0131nda DNS ile kar\u015f\u0131la\u015f\u0131r. Bir web sitesine gitmek istediklerinde, yazd\u0131klar\u0131 adres arka planda DNS sistemi taraf\u0131ndan say\u0131sal bir IP adresine \u00e7evrilir. Bu s\u00fcre\u00e7 yaln\u0131zca birka\u00e7 milisaniye i\u00e7inde ger\u00e7ekle\u015fir ve kullan\u0131c\u0131ya fark ettirmeden internet deneyiminin temel ta\u015flar\u0131ndan birini olu\u015fturur. DNS olmasayd\u0131, her siteye eri\u015fmek i\u00e7in karma\u015f\u0131k IP numaralar\u0131 ezberlemek [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1226,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,68],"tags":[],"class_list":["post-1219","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nedir-nasil-yapilir","category-teknoloji"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>DNS Nedir, DNS Ayarlar\u0131 Nas\u0131l De\u011fi\u015ftirilir? - Uzman Posta<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uzmanposta.com\/blog\/dns-nedir-dns-ayarlari-degistirme\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DNS Nedir, DNS Ayarlar\u0131 Nas\u0131l De\u011fi\u015ftirilir? - Uzman Posta\" \/>\n<meta property=\"og:description\" content=\"\u00c7o\u011fu internet kullan\u0131c\u0131s\u0131 fark\u0131nda olmadan taray\u0131c\u0131lar\u0131n\u0131 her a\u00e7t\u0131klar\u0131nda DNS ile kar\u015f\u0131la\u015f\u0131r. Bir web sitesine gitmek istediklerinde, yazd\u0131klar\u0131 adres arka planda DNS sistemi taraf\u0131ndan say\u0131sal bir IP adresine \u00e7evrilir. Bu s\u00fcre\u00e7 yaln\u0131zca birka\u00e7 milisaniye i\u00e7inde ger\u00e7ekle\u015fir ve kullan\u0131c\u0131ya fark ettirmeden internet deneyiminin temel ta\u015flar\u0131ndan birini olu\u015fturur. DNS olmasayd\u0131, her siteye eri\u015fmek i\u00e7in karma\u015f\u0131k IP numaralar\u0131 ezberlemek [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/uzmanposta.com\/blog\/dns-nedir-dns-ayarlari-degistirme\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/uzmanposta\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-02-20T12:29:32+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-10T20:53:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/uzmanposta.com\/blog\/wp-content\/uploads\/2021\/02\/dns-nedir-dns-ayarlari-nasil-degistirilir.png\" \/>\n\t<meta property=\"og:image:width\" content=\"750\" \/>\n\t<meta property=\"og:image:height\" content=\"375\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Sibel Ho\u015f\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@uZmanPosta\" \/>\n<meta name=\"twitter:site\" content=\"@uZmanPosta\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sibel Ho\u015f\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"13 dakika\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"DNS Nedir, DNS Ayarlar\u0131 Nas\u0131l De\u011fi\u015ftirilir? - Uzman Posta","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/uzmanposta.com\/blog\/dns-nedir-dns-ayarlari-degistirme\/","og_locale":"tr_TR","og_type":"article","og_title":"DNS Nedir, DNS Ayarlar\u0131 Nas\u0131l De\u011fi\u015ftirilir? - Uzman Posta","og_description":"\u00c7o\u011fu internet kullan\u0131c\u0131s\u0131 fark\u0131nda olmadan taray\u0131c\u0131lar\u0131n\u0131 her a\u00e7t\u0131klar\u0131nda DNS ile kar\u015f\u0131la\u015f\u0131r. 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