Hi Dan, Thank you for your prompt reply. > particularly the Administration section. I've had similar problems as you > when not getting the admin config correct: If virtdomains are enabled and > you are connecting as 'cyrus', you might need to add > 'cyrus@xxxxxxxxxxxxxxxxxxxxx'. Or in your case, john. My /etc/imapd.conf follows : admins: cyrus john virtdoamins: yes defaultdomain: grt.citizen.co.jp Then, I authenticate with kerberos and login to cyradm console :- >kinit john@xxxxxxxxxxxxxxxxx >cyradm --user john imapsv01.grt.citizen.co.jp imap imapsv01.grt.citizen.co.jp>lm << empty list >> imapsv01.grt.citizen.co.jp> I checked the server log and it read that I passed GSSAPI login. The most interesting point is that cyradm seems get crashed after first failure :- >kinit john@xxxxxxxxxxxxxxxxx >cyradm --user john imapsv01.grt.citizen.co.jp imap imapsv01.grt.citizen.co.jp>lm user/c* << a list of mailboxes starting with c* >> imapsv01.grt.citizen.co.jp>lam user/chkuk << show ACL of the mailbox chkuk >> imapsv01.grt.citizen.co.jp>lm << empty list >> imapsv01.grt.citizen.co.jp>lm user/c* << empty list >> imapsv01.grt.citizen.co.jp>quit >cyradm --user john imapsv01.grt.citizen.co.jp imap imapsv01.grt.citizen.co.jp>lm user/c* << a list of mailboxes starting with c* >> Is it a bug in the cyrus-admin-2.2 package on Ubuntu 6.06.2 LTS? Thanks a lot. John Mok ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html