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Thread: [SOLVED] Zimbra mail relay questions

  1. #1
    Join Date
    May 2009
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    Default [SOLVED] Zimbra mail relay questions


    our Zimbra mail server runs behind a firewall and sends all outgoing mail through our ISPs mail server. The domain name on our Zimbra server is called "" and also the domain of our ISP is called "".

    The problem is, that some mail accounts that exist on our ISPs mail server should not exist on our Zimbra server but we need to send mails to these "external" ISP accounts!

    Because our local mail domain is also called "" like our ISP's domain the Zimbra server is only looking for "" on itself.
    How can i setup Zimbra that it looks for mail accounts on itself first and if the mail account "" does not exist it should search for it on our ISPs mail server.

    Thx for Help!

  2. #2
    Join Date
    Feb 2007
    Portland, OR
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    Take a look at this Wiki entry: Split Domain - Zimbra :: Wiki
    That should be what you need to get it setup.

  3. #3
    Join Date
    May 2009
    Rep Power


    Thank you very much! Now it works!
    Nice to see that the Split DNS HowTo was updated such a lot.

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