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Thread: [SOLVED] MTA deliver local domain with MX

  1. #1
    andrzej is offline Junior Member
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    Default [SOLVED] MTA deliver local domain with MX

    Hi,

    We have added domain xyz.com to the system.
    the MX record for XYZ.com i mail.xyz.com and mail.xyz.com resolves (after 2 additional CNAME records and the A record of zimbra.abc.com) to our zimbra IP.

    When the message is sent to doe@xyz.com it is being delivered to our MTA but gets to the Deffered queue. The error is:

    connection to zimbra.abc.com[PUBLIC.IP.AS IN.DNS] :7025 time out.

    Why does it want to connect to such address ?

    The MTA is on the same server as mailbox store.

    Andrzej

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by andrzej View Post
    We have added domain xyz.com to the system.
    the MX record for XYZ.com i mail.xyz.com and mail.xyz.com resolves (after 2 additional CNAME records and the A record of zimbra.abc.com) to our zimbra IP.
    You should not use CNAME records for your mail server DNS, usa A & MX records only.

    Quote Originally Posted by andrzej View Post
    When the message is sent to doe@xyz.com it is being delivered to our MTA but gets to the Deffered queue. The error is:

    connection to zimbra.abc.com[PUBLIC.IP.AS IN.DNS] :7025 time out.

    Why does it want to connect to such address ?

    The MTA is on the same server as mailbox store.
    Is this a single server and is it behind a NAT router (or firewall)? What's the output of the following command:

    Code:
    zmcontrol status
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    andrzej is offline Junior Member
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    Quote Originally Posted by phoenix View Post
    You should not use CNAME records for your mail server DNS, usa A & MX records only.

    Is this a single server and is it behind a NAT router (or firewall)? What's the output of the following command:

    Code:
    zmcontrol status
    Thank's.
    Why shouldn't I use CNAME for mail server, are there any non-zimbra issues with it?

    zmcontrol status gives everything ok.

    the single server is behind the firewall (with 7025 blocked on public IP, and open on localhost)and I solved the problem by unchecking th resolve DNS in the MTA settings and adding the fqhn to hosts.

    Is it so that the MTA takes from LDAP the mailstore server name than resolves it to an IP and tries to connect with LMTP? If yes that would be the reason.

  4. #4
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by andrzej View Post
    Thank's.
    Why shouldn't I use CNAME for mail server, are there any non-zimbra issues with it?
    You shouldn't use a CNAME with any mail server it's not good practice and you may lose email.

    Quote Originally Posted by andrzej View Post
    zmcontrol status gives everything ok.
    I didn't want to know that, I wanted to see the output.

    Quote Originally Posted by andrzej View Post
    the single server is behind the firewall (with 7025 blocked on public IP, and open on localhost)and I solved the problem by unchecking th resolve DNS in the MTA settings and adding the fqhn to hosts.
    You need to set-up a Split DNS so the server can resolve it's IP address or open the port in the firewall.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
    andrzej is offline Junior Member
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    That's it the Split DNS.

    Thanks!

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