May I gently "push" this? The string "BUG: Authentication client sent unknown handshake command" comes from dovecot (presumably it's in the source code) so I think it shouldn't be too mysterious what's happening here.
Thank you, Luke On 2014-07-03 19:10, Lukas Haase wrote: > Hi, > > Some time ago my dovecot started to become BUGgy: Evertime I restart the > system, dovecot is started but I cannot login. I see the following > information in the logs: > > Jul 4 04:04:36 mail dovecot: auth: > passwd-file(user,127.11.91.218,<nfkQjFT9vwCADFra>): no passwd file: > /etc/dovecot/imap.passwd > Jul 4 04:04:36 mail dovecot: auth: Error: BUG: Authentication client > sent unknown handshake command: > REQUEST?1183186945?20438?1?a8c7241e7b0778f9f0125da760cd16fa > Jul 4 04:04:36 mail dovecot: imap: Error: Authentication server didn't > send valid SPID as expected: MECH#011PLAIN#011plaintext > Jul 4 04:04:36 mail dovecot: imap: Error: Disconnected from auth > server, aborting (client-pid=20438 client-id=1) > Jul 4 04:04:36 mail dovecot: imap-login: Internal login failure > (pid=20438 id=1) (internal failure, 1 succesful auths): user=<user>, > method=PLAIN, rip=127.11.91.218, lip=73.82.101.172, mpid=20439, TLS, > session=<nfkQjFT9vwCADFra> > > It does not help to restart the client. But when I then restart the server > service dovecot restart > it works again. > > But this is very dangerous because the server might reboot and I might > not immideately have the chance to restart dovecot manually. > > What's going on here? > > mail:/# uname -a > Linux mail 2.6.32-openvz-042stab090.2-amd64 #1 SMP Sat Jun 21 00:22:42 > MSK 2014 i686 GNU/Linux > mail:/# dovecot --version > 2.1.7 > > Thanks, > Luke >