On Jun 23, 2005, at 9:57 PM, John Traweek wrote: > Hi all, > My company runs a LISTSERV/LSMTP combination to send out > personalized DISTRIBUTE JOBs to certain lists. About a month ago > we started > receiving complaints from a few random recipients that they were > receiving > multiple copies of the same message. In fact, they received a copy > of the > message 100 + times, until the four day max delivery try was > reached by > LSMTP. This is very random, it probably only occurs once for every > 100,000 > recipients. I have verified that the receiving servers do not > appear to be > running the infamous PIX SMTP Fix Up protocol, which is notorious > for this. > It appears that the receiving server simply does not reply with a 250 > Success after LSMTP issues the "." end of message command. Here is > a sample > from the log - This topic is probably more appropriate for the LSMTP list. I suspect your LSMTP installation is configured to be too agressive in its attempts to deliver emails to heavily loaded servers. I don't know the parameter to change, but I am sure if you review the documentation for LSMTP, you'lll find the information. The idea is to tell LSMTP to allow more time for a destination server to respond before your LSMTP attempts to resend a message.