[Dovecot] Disconnected (no auth attempts)

Hello list,

I have a user who is not able to 'get' email using the 'Get Mail' option in his Thunderbird Client.

The error on the server is the following:

[Dovecot] dovecot: imap-login: Disconnected (no auth attempts) : rip 192.168.7.7, lip 192.168.7.12, TLS

This user is able to receive mail on his phone, however.

What does this error mean?

Eric <http://www.dovecot.org/list/dovecot/2012-January/062988.html>