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Thread: Messages Fail Sending to Gmail Only

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  1. #1
    Join Date
    May 2007
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    Default Messages Fail Sending to Gmail Only

    I've had our Zimbra server working for quite a few months without a hitch. Over the last month, however, I'm experiencing problems delivering messages to Gmail. After 72 hours, the message fails:

    Final-Recipient: rfc822;
    Action: failed
    Status: 4.0.0
    Diagnostic-Code: X-Postfix; delivery temporarily suspended: connect to[]: Connection timed out

    Thank you in advance.

  2. #2
    Join Date
    Jul 2007
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    Default Having the same issue...

    I can send to, my work, etc.

    Only gmail accounts fail.

    Running OSE 4.5.6 on Ubuntu 6.10.

    No errors in /var/logs/zimbra.log

  3. #3
    Join Date
    Aug 2007
    Rep Power

    Exclamation Connection Timeouts - Varied Destinations

    I have a new install of Zimbra 4.5.6 and am having similar problems with timeouts, first just to and but broadening slowly to other sites.

    Suse 10.2, 32bit

    Identical error as per this thread.

    Any Ideas Appreciated....

  4. #4
    Join Date
    Aug 2007
    Rep Power

    Default My theory on is....

    In general, Gmail seem to have tightened their spam filtering in recent months.

    To successfully deliver mail to gmail accounts, my server needed a valid reverse DNS entry and an SPF record.

    But the error you see in your log doesn't point to any of this.

    I just had a look at, it does seem to be a gmail IP, but I cannot telnet to it on port 25.

    Google do all kinds of clustering and round-robin DNS, so my guess is that your issue was intermittant and may well be resolved by now.

    Whenever your MTA is told to connect to gmail it will resolve to one of many IPs.

    This particular one, has issues, as it's refusing connections on port 25. Google will take this one out of the cluster until they fix whatever is wrong with it and things should work again for you.

  5. #5
    Join Date
    Mar 2008
    Rep Power


    I am facing exactly this error. I could not send mail to gmail, even other email addresses are fine. My IP has rDNS and domain has SPF record already

    Is there any idea to fix?
    Thank you.

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