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Thread: Mail deferred writing DATA for no obvious reason

  1. #1
    Join Date
    Mar 2014
    Rep Power

    Question Mail deferred writing DATA for no obvious reason

    Hi everybody,

    I build a prototype of Zimbra 8.0.6, and i configured a network scanner to use my zimbra server to send scans. It works well, but, sometimes, I see some mails in a queue. Some of them go through, some others don't, and I don't understand why. When I flush the queue, all waiting mails are sent...

    This is an exemple of logs that I can find :

    postfix/smtp[17182]: 7AF6A643FA: to=<>,[XX.XX.XX.XX]:25, delay=500, delays=0.25/0.01/5.7/494, dsn=4.0.0, status=deferred (host[XX.XX.XX.XX] said: 421 SMTP incoming data timeout - closing connection. (in reply to end of DATA command))
    Do you have an idea about why and how to solve this issue ? My server is in China, and most of the recipients in France, maybe it could be a bandwidth issue ?

    Thanks for any helps

  2. #2
    Join Date
    May 2007
    Rep Power


    Definitely looks like a bandwidth issue. Not really a Zimbra issue.
    Quanah Gibson-Mount
    Server Architect
    Zimbra, Inc
    Zimbra :: the leader in open source messaging and collaboration

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