Peter Rindfuss <peter.rindfuss@???> (Di 07 Mär 2017 10:28:59 CET): > We are using Exim 4.88 on Debian with a non-Debian config. We deliver to
> our mailboxes on a separate Dovecot IMAP machine using LMTP over TCP
> (SMTP transport). A few times a day we see "Connection timed out" on the
> transport. It strikes me as odd that the time between the reception of a
> message and the delivery timeout is typically around 20 seconds, whereas
> all timeout values are at their defaults, which is 5 minutes for
> connect, command and data. Any ideas on this?
Are there any obstacles (firewalls, routers) between your Exim and the
LMTP server?