Posted on 2006-04-25
Last Modified: 2008-02-01
Qmail was running fine today until it came an error:

An unknown error has occurred. Subject 'rqer', Account: '**** ****, Server: '****.*****.***', Protocol: SMTP, Server Response: '451 qq temporary problem (#4.3.0)', Port: 25, Secure(SSL): No, Server Error: 451, Error Number: 0x800CCC6A

any idea?
Question by:jedistar
    LVL 43

    Expert Comment

    Disk full?
    # du /var/qmail/queue
    check /var/log/maillog or /var/log/messages for other reasons.

    Author Comment

    not full

    Expert Comment

    What distro are you running qmail on?

    Do you have the packate SUIDPERL installed?

    Also if you are running qmail-scanner try stopping it and then restart qmail.  If you are on a Redhat/Fedora solution make sure the server exim is not running.


    Author Comment

    LVL 2

    Accepted Solution

    My first answer will be, that I hav`nt tried it myself, yet a bit of web search has come up with this:

    This message claims that the mail server has a problem with his work. That mean that you should open the log file, and probably learn for yourself what went wrong. The usual stuff is premissions: The qmail user is not allowed writing in the mail folder, qscand has no reading premission on the file, and can`t scan it for viruses, and all that stuff. Just make sure thease are ok.


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