On 10/12/2020 14:58, Steve Akerman wrote: > Good afternoon > > I have been using Dovecot with great success for several months now > with one problem: > > I have received several messages (3 to date out of a much larger > number) which cause Dovecot LMTP to drop the connection with sendmail > after only receiving the first part of the message. > > Dovecot saves the first part to INBOX, and then drops the link with > sendmail as it sees the rest of the data from sendmail as new (and > invalid) commands > > Sendmail sees the delivery as unsuccessful and requeues the message, > so the cycle continues until i kill the queue > > These messages are all Multipart MIME > > I have attached an extract from the log which shows the above sequence > > Finally, I have kept one such message from the sendmail queue (df and > qf) should this be useful, but prefer not to post here as not sanitised > > Any help in correcting my configuration would be appreciated. > > Thanks > > Steve > > <snip> > Hi Steve
strange as it sounds, looks like your mta is sending the lmtp end of message sequence (<CRLF>.<CRLF>)in the middle of an email. You might be able to debug it in dovecot with lmtp_rawlog_dir setting which will show the input and output dialog of the lmtp session. John
