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Thread: Problem with Open Relay... Can it be disabled?

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  1. #1
    Join Date
    Jun 2012
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    Exclamation Problem with Open Relay... Can it be disabled?

    Hello to you all!

    I just started working on a new company, and they installed Zimbra Collaboration Suite a couple of months ago.

    I've been getting this last 2 days more than 3000 emails deferred from random email accounts of our domain coming from different ip addresses (i've blocked most of ip addresses on but i keep getting too many deferred emails)

    All of our users have installed Thunderbird with SSL-TLS with authentication for incoming & outgoing emails, and they all changed their passwords last week.

    This is our current Zimbra version: Release 7.1.0_GA_3140.UBUNTU8 UBUNTU8 FOSS edition.

    As i started checking /var/log/zimbra.log i kept getting this lines:

    Jun 6 06:50:36 mail amavis[30206]: (30206-14) [B]Open relay? Nonlocal recips but not originating

    I also tried different open relay testing sites and i kept failing all test (Message received: Relays accepted by remote host)

    Is there any way to disable open relay on Zimbra? if so... how do i do it? i read many threads without any solution.

    Kind regards in advance for all your help and assistance

    Last edited by Leonardo Maldonado; 06-07-2012 at 09:06 AM.

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