[exim-dev] [Bug 456] New: Periodic continuation lines for lo…

Góra strony
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Autor: bug456
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Dla: exim-dev
Temat: [exim-dev] [Bug 456] New: Periodic continuation lines for long-running ACLs
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http://www.exim.org/bugzilla/show_bug.cgi?id=456

           Summary: Periodic continuation lines for long-running ACLs
           Product: Exim
           Version: 4.66
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: wishlist
          Priority: medium
         Component: ACLs
        AssignedTo: ph10@???
        ReportedBy: vectro@???
         QAContact: exim-dev@???



Some spam tests can hold onto a message for a very long time while running
various checks; if you want to do spam checking up-front (instead of accepting
it and sending an RFC822 bounce), you may run the risk of the sending server
timing out before the check is done. Short of greylisting and running the tests
in the background, one way of addressing this is with continuation lines.

If an ACL could specify a frequency with which exim could send a
"550-Processing, please wait" message, it would allow for longer-running spam
checking while forestalling the sending server's willingness to disconnect.
Perhaps there could be a "control = smtp_reminder_frequency/30s" ACL modifier.

Thoughts on this issue?

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