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Thread: Split_DNS and DynDNS: MX-record

  1. #1
    john99 is offline Advanced Member
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    Default Split_DNS and DynDNS: MX-record

    Hello,

    we are going to setup ZCS in Split-DNS scenario.


    Quote Originally Posted by uxbod View Post
    As Mike has already said if you are behind a firewall/router and the server will be on a private LAN you will require a Split DNS architecture. If you are using dyndns then you need to get that sorted first so that the MX (Mail Exchange) record is able to point to a server which is addressable from the public side of your router.

    Question:
    What steps are involved in order to meet the following requirement (and what server do you mean) ?

    "so that the MX (Mail Exchange) record is able to point to a server which is addressable from the public side of your router"




    Thank's a lot for you help!

    John

  2. #2
    uxbod's Avatar
    uxbod is offline Moderator
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    John,

    when you use the dyndns service they will ensure that your dynamic IP always resolves to the server name. Your MX record for your domain will then be pointed at your server name. On your firewall you would then forward port 25 traffic from the external IP to the internal IP of your Zimbra server.

    Does that make sense ?

  3. #3
    weigenmann is offline Active Member
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    John,

    I would like to add that you implement also ddlcient. If your router has DDNS (Dynamic DNS) feature built in, you may use that. In my router it never worked. ddclient works like a treat.

    Code:
    http://ddclient.wiki.sourceforge.net/

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