The disconnect (no auth attempts) means that the client did not see any reason to try logging in.
You can use https://wiki.mozilla.org/MailNews:Logging to enable debug logging. Aki On 16.08.2017 09:50, Erik Haller wrote: > I am migrating an existing dovecot server to a new server. The existing > server uses pam_krb5 and works with the plain and gssapi methods. The new > server plain/pam_krb5 normal password authentication works. However, the > gssapi (tickets) authentication is producing the following error: > > === Begin Error ==== > > imap-login: Disconnected (no auth attempts in 0 secs): user=<>, > rip=192.168.7.61, lip=192.168.7.97, TLS, session=<SPnD7NhWWtrAqAc9> > > === End Error === > > What is causing the "user=<>"? It should be "user=<erik>". > > I have been using Thunderbird SSL GSSAPI from a Debian Linux testing/buster > XFCE desktop to connect to the existing server for years. When I point it > to the new server, I receive the above error. > > ssh kerberos gssapi authentication is working fine on the new server. > > Most of the doveconf setting between the existing and new servers are the > same. > > The existing server is 32 bit. The new server is 64 bit running in an LXC > container. The existing server dovecot version is the same as the new > server. > > > Notes: > > dovecot version: 2.2.31 (65cde28) > OS: Debian Linux testing/buster > Arch: amd64 > > Client: Mozilla Thunderbird 52.2.1 (latest)
