Most likely, this is a virus/spam filter issue. Some qmail installations pass the incoming email to Spamassassin or ClamAV before acknowledging the delivery. When that happens, spamdyke's idle timeout can trigger a disconnection if the scanner takes too long (this is common for large attachments).
The best way to be sure is to enable full logging (with "full-log-dir") and examine the logs for disconnected deliveries. The log will contain timestamps that will show long each response was delayed. Of course, it's also possible you've found a bug. :) In that case, I'll need to find a way to reproduce it, so I may need you to (privately) send me a few full logs along with details of your spamdyke configuration. -- Sam Clippinger Chris Robinson wrote: > Hi Everyone, > > I run mail servers for about 30 companies (qmail /spamdyke 3.1.0 / Fedora > 2.4.21) and started experiencing a problem whereby some users complained > that they could send an email and it was received by the recipient corrupted > multiple times in varying sizes until eventually the final version would > arrive correct in full. To cut a long story short I eventually tracked it > down from a string in a user's Outlook log "Talk faster next time". A google > revealed all. It wasn't coming from qmail but from spamdyke, which explained > why I couldn't grep it in the qmail source. > > I've probably fixed it by setting "idle-timeout-secs=1200". But what worries > me is why the recipient got anything except the final good email. If > spamdyke issues that 421 error then breaks the connection, the user's > Outlook can justifiably assume that the email won't have been accepted by > the server, nor sent to the recipient. But what seems to happen is that the > part that has been received down the pipe so far has been passed by spamdyke > to qmail-smtpd which has passed it to qmail-queue and thence to the local or > remote recipient. Surely no "250 OK 123 qp 456" has come out of qmail? > > Is this a spamdyke issue or a qmail issue? > > Cheers, > Chris Robinson > > > > _______________________________________________ > spamdyke-users mailing list > [email protected] > http://www.spamdyke.org/mailman/listinfo/spamdyke-users _______________________________________________ spamdyke-users mailing list [email protected] http://www.spamdyke.org/mailman/listinfo/spamdyke-users
