Results 1 to 4 of 4

Thread: Why do DNS Server mx record requirement?

  1. #1
    Join Date
    Jun 2012
    Posts
    27
    Rep Power
    3

    Post Why do DNS Server mx record requirement?

    Hi,

    Why do we need a DNS server with mx record while installing Zimbra. Even after installing we removed DNS server Zimbra is working fine. What is the need for DNS server with mx record at installation time? Can we change the domain name to a new one and delete the old one which has no DNS mx record?

    Thanks
    britto

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
    Join Date
    Sep 2005
    Location
    Vannes, France
    Posts
    23,587
    Rep Power
    58

    Default

    Quote Originally Posted by brittocj View Post
    Why do we need a DNS server with mx record while installing Zimbra. Even after installing we removed DNS server Zimbra is working fine. What is the need for DNS server with mx record at installation time? Can we change the domain name to a new one and delete the old one which has no DNS mx record?
    Postfix does a DNS lookup to deliver mail, if you're behind a NAT router you'll need to set-up a Split DNS (see the wiki and forums) so mail will get delivered to the Zimbra server - you can't run it without DNS records. It''s in the installation to make sure you actually do have valid DNS records pointing to your server - this topic has been covered and explained many times in the forums.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    Join Date
    Jun 2012
    Posts
    27
    Rep Power
    3

    Default When i delete default domain?

    Quote Originally Posted by phoenix View Post
    Postfix does a DNS lookup to deliver mail, if you're behind a NAT router you'll need to set-up a Split DNS (see the wiki and forums) so mail will get delivered to the Zimbra server - you can't run it without DNS records. It''s in the installation to make sure you actually do have valid DNS records pointing to your server - this topic has been covered and explained many times in the forums.
    When delete default domain and create some new domain which has no dns entry then what will happen? DNS only related to receive external mails right? So if we are using fetchmail to get mails from external server and inject to Zimbra DNS is not required, right?

    Thansk
    britto

  4. #4
    phoenix is offline Zimbra Consultant & Moderator
    Join Date
    Sep 2005
    Location
    Vannes, France
    Posts
    23,587
    Rep Power
    58

    Default

    Quote Originally Posted by brittocj View Post
    When delete default domain and create some new domain which has no dns entry then what will happen?
    That depends on what you're talking about.

    Quote Originally Posted by brittocj View Post
    DNS only related to receive external mails right?
    That also depends on what you're talking about.

    Quote Originally Posted by brittocj View Post
    So if we are using fetchmail to get mails from external server and inject to Zimbra DNS is not required, right?
    Guess what, same answer as the other two. Why aren't you having mail delivered directly to the Zimbra server? You don't need a DNS entry for every for every domain on your server you need the Split DNS for the primary domain and to resolve server hostname - I'd suggest you do some reading on the subject.

    Thansk
    britto[/QUOTE]
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

Similar Threads

  1. Replies: 4
    Last Post: 06-20-2010, 01:38 PM
  2. Server specifications requirement
    By snake_eyes in forum Installation
    Replies: 5
    Last Post: 02-16-2010, 01:05 PM
  3. Replies: 11
    Last Post: 05-12-2009, 07:26 AM
  4. Replies: 6
    Last Post: 12-13-2008, 12:04 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •