Alexey Amerik wrote: > Problem fixed! The problem was related to severely crippled downstream > because of a switch misconfiguration that resulted in packet collisions, > and very poor performance. it is my guess that simscan simply gave up > waiting on downloading of messages with fairly large attachments . > Thank you everyone.
This makes sense. Duplicate messages in my experience are related to smtp latency - whether it's overloaded scanners, dns problems, or as in your case, network problems. The sending MTA just resends if the termination of the DATA command does not respond quickly enough. > The only question now is how do I deal with those messages that are > still stuck in /var/qmail/simcan? There is about 12mb of undelivered > messages in that location. I dont think simscan tries to redeliver. If they are still there, then it's pretty likely that the messages were retried anyway. Perhaps someone will have a method for getting them into the queue. But if I were you, I'd just archive it, and remove it from /var/qmail/simscan. Regards, Bill
