Comprendre le DNS : site et email

Le DNS relie un domaine aux services techniques. A et AAAA désignent des adresses IP ; CNAME crée un alias. MX indique les serveurs de courrier ; TXT porte notamment des vérifications. Avant toute modification, identifiez le fournisseur DNS faisant autorité et conservez les valeurs actuelles. Acheter un domaine ne configure pas automatiquement son site.

Documentation officielle

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