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Thread: Forwarding at Split Domain

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  1. #1
    Join Date
    Jul 2012
    Rep Power

    Default Forwarding at Split Domain

    Hi Guys.

    I installed a zimbra server as a secondary and a postfix server as a primary mta using as a single domain. First I tried to configure zimbra to forward all messages of recipients that aren't hosted on zimbra secondary to primary mta. However, when a zimbra userI send a message to a recipient on Internet (eg user@yahoo) the connection is refused, like the zimbra server log below:

    Jul 17 05:48:51 zimbra postfix/smtp[15890]: A02D941B832C: to=<>, relay=none, delay=55115, delays=55115/0.01/0/0, dsn=4.4.1, status=deferred (connect to[]:25: Connection refused)
    Jul 17 06:53:52 zimbra postfix/smtp[17207]: 057E941B832A: to=<>, relay=none, delay=59218, delays=59218/0.02/0/0, dsn=4.4.1, status=deferred (connect to[]:25: Connection refused)
    Jul 17 06:53:52 zimbra postfix/smtp[17208]: DC85141B8329: to=<>, relay=none, delay=59321, delays=59321/0.01/0/0, dsn=4.4.1, status=deferred (connect to[]:25: Connection refused)
    Jul 17 06:58:51 zimbra postfix/smtp[19717]: 2C8BA41B832B: to=<>, relay=none, delay=59358, delays=59358/0.02/0/0, dsn=4.4.1, status=deferred (connect to[]:25: Connection refused)

    I hoped that in the field "( connect to []: 25" were showed the IP address of the primary server (postfix) to which the messages are being sent. However, note that IPs,,, not belong to the primary MTA and were not set on any cinfiguration file on any mail server. The IPs above also are not mail servers. These IPs are DNS servers my network.

    Anyone know what's going on?

    The set the forwarding using the follow comands on zimbra secondary:

    # zmprov md zimbraMailCatchAllAddress
    # zmprov md zimbraMailCatchAllForwardingAddress
    # zmprov md zimbraMailTransport
    # zmprov mcf zimbraMtaRelayHost
    # zmprov mcf zimbraMtaDnsLookupsEnabled FALSE
    # postfix stop
    # postfix start
    Where "" is a alias to primary mta.

    On the postfix primary MTA I set this line in the file:

    mynetworks =,
    Where is the network of primary MTA server and is the network of the secondary.

    I'm grateful for any help.


  2. #2
    Join Date
    Nov 2011
    Rep Power


    Hi Brazilian friend!

    Just configure your server ip.

    This error is related to DNS, I had the same problem here in the company.
    Quote Originally Posted by rcanto View Post
    mynetworks =,
    Tests with IP OK - Qual seu ip? teste de reverso, teste de dns, dns reverso, blacklist, dnsreport (dns report)

    also tests the Reverse DNS

    Test by turning off DNS checking the admin panel for this zimbra server. If it works, the problem is in DNS

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