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Thread: Split Domain with OS X Postfix

  1. #1
    wickhamandrew Guest

    Unhappy Split Domain with OS X Postfix

    Does anyone know how to configure OS X Postfix to allow split domain with Zimbra? I have looked over the guide and I believe I have everything working on the Zimbra side of things but I can't figure out how to do the configuration to set up OS X Postfix as our primary mail server.

    Here's what we want our setup to be:

    Primary Mail Server:
    Mail Domain: lake.stark.k12.oh.us
    DNS: x3.lake.stark.k12.oh.us
    IP: 10.24.45.2

    Secondary Mail Server:
    Mail Domain: lake.stark.k12.oh.us
    DNS: zimbra.lake.stark.k12.oh.us
    IP: 10.24.40.97

    Any help is greatly appreciated. Thanks a ton.

  2. #2
    wickhamandrew Guest

    Default Instructions

    After piddling around with this for a complete day I have finally figured out what steps need to take place in order to do this correctly.

    The first step is to do the Split Domain instructions for Zimbra as a secondary server. Then on your primary server, the OS X server, do the following.

    In /etc/postfix/main.cs add this line if it doesn't already exist
    Code:
    transport_maps = hash:/etc/postfix/transport
    Then in the transport file (/etc/postfix/transport) add the following lines for each user you want to have on the Zimbra server:

    Code:
    user@example.com    smtp: zimbra.example.com
    Now execute the following command:
    Code:
    postmap /etc/postfix/transport
    And finally, restart postfix:
    Code:
    postfix reload

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