Latest Dovecot in 20060201 breaks imap

[Steven Haigh]

dovecot-1.0-0.beta2.2
---------------------
* Tue Jan 31 2006 Petr Rockai <prockai at redhat.com> - 1.0-0.beta2.2
- update URL in description
- call dovecot --build-ssl-parameters in postinst as per #179430

After installing this update, OSX's Mail.app program now refuses to  
talk via IMAP to the dovecot server. Using IMAPS on port 993 works,  
however not without SSL on port 143.

the log in /var/log/maillog shows:
Feb  2 02:02:48 zeus dovecot: imap-login: Aborted login:  
rip=203.56.246.84, lip=203.56.246.81
Feb  2 02:03:19 zeus last message repeated 10 times
Feb  2 02:03:48 zeus dovecot: imap-login: Aborted login:  
rip=203.56.246.84, lip=203.56.246.81

interestingly enough, Squirrelmail can still use localhost:143 ok as  
it's IMAP mail source.

I can also telnet to the server and get a banner.
# telnet zeus.crc.id.au 143
Trying 203.56.246.81...
Connected to zeus.crc.id.au (203.56.246.81).
Escape character is '^]'.
* OK Dovecot ready.

Do we know exactly what changed in this update?

--
Steven Haigh

Email: netwiz at crc.id.au
Web: http://www.crc.id.au
Phone: (03) 9017 0597 - 0412 935 897