On Sat, Feb 11, 2017 at 12:51:10AM +0100, Patrik wrote: > this? > smtp inet n - y - - smtpd > to > smtp unix n - y - - smtpd
No, it would have been the one that says "dovecot-lmtp", but you don't have one at all apparently. On closer inspection, you seem to have an smtpd(8) delivery agent trying to resolve "private/dovecot-lmtp" as a TCP port number. Perhaps a badly mangled content_filter setting, or garbage in a transport table entry. -- Viktor.