Jason Haar wrote:
Thanks, The thing is I'm seeing the same mail again and again. In my previous example it's a newsletter from an online shop that is being resent over and over. So it's not a SPAM engine and it more or less rules out random connection loss. Is there anything else I should be checking on my end, any reason my server would be dropping the connection. Or should I just ignore it as some other poor soles problem?Ewan Bain wrote:
I found this in the qmail scanner file : #At the very least this is supposed to be $env_returnpath='F' - so #qmail-smtpd must be officially dropping the incoming message for #some (valid) reason (including the other end dropping the connection).
So i'm now thinking this is probably not a qmail scanner problem. Has anyone seen this before or does anyone have an explanation. The qmail log files are next to useless. Is their a way to find out why qmail is dropping the message?
Good lad - you're on the right track :-)
Yes - it means qmail-smtpd started receiving an e-mail, and something happened half-way through that made that connection drop. Unfortunately for qmail-queue/qmail-scanner, they have already been called, so it's up to them to clean up the mess - not qmail-smtpd. qmail-smtpd "tells" qmail-queue/Q-S that this is a broken transaction by not setting the envelope variables - so they cleanup and stop.
Things like network glitches/drops and poorly written SPAM smtp engines can cause such events. Also, perhaps something like an overloaded firewall in front of your mail servers might do it too - basically anything that causes network drops.
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