[exim-dev] [Bug 1253] New: Messages rejected with 421 are de…

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Autor: Alex Frolkin
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Para: exim-dev
Temas novos: [exim-dev] [Bug 1253] Messages rejected with 421 are delivered, when logs misconfigured, [exim-dev] [Bug 1253] Messages rejected with 421 are delivered, when logs misconfigured, [exim-dev] [Bug 1253] Messages rejected with 421 are delivered, when logs misconfigured
Asunto: [exim-dev] [Bug 1253] New: Messages rejected with 421 are delivered
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http://bugs.exim.org/show_bug.cgi?id=1253
           Summary: Messages rejected with 421 are delivered
           Product: Exim
           Version: 4.72
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: bug
          Priority: medium
         Component: Delivery in general
        AssignedTo: nigel@???
        ReportedBy: avf@???
                CC: exim-dev@???



We had a problem on our Exim servers recently, where mainlog and rejectlog got
chown'ed to the wrong user, due to a log rotation cockup. I've managed to
reproduce this issue in out test environment.

1. Start Exim.
2. While Exim is running, chown mainlog and rejectlog to, say, root, so that
Exim can't write to them.
3. Try to deliver a mail from a remote machine via the local Exim, via SMTP.
4. Exim will respond with "421 <hostname> Unexpected failure, please try later
- closing connection." after end of DATA.
5. However, the message will still end up on the queue and will get delivered
on the next queue run, by the looks of things.

Obviously, this has the effect of sending out multiple copies of the same
message, one for each retry after a 421.


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