A junior administrator of mine mistakenly created a mailbox with an empty name, by typing into cyradm the commands:

createmailbox user/$lb setquota user/$lb 10000

He will of course shortly receive an extra lesson on shell variables, but meanwhile I find myself confronted with the problem how to get rid of the mailbox he created. So far all attempts have failed:

[cyrus@posthamster ~]$ /usr/lib/cyrus-imapd/quota Quota % Used Used Root 0 user/ 0 user/ 10000 [...] [cyrus@posthamster ~]$ ls -l /var/spool/imap/user/ total 2180 drwx------. 2 cyrus mail 4096 Oct 1 2012 drwx------. 2 cyrus mail 4096 May 7 08:53 10000 [...] [cyrus@posthamster ~]$ cyradm -u cyrus localhost IMAP Password: localhost> sq user/$lb localhost> dm user/$lb deletemailbox: Permission denied localhost> lam user/$lb "" lrswipkxtecda localhost> sam user/$lb cyrus all usage: setaclmailbox mailbox id rights [id rights ...] localhost> sam user/"" cyrus all setaclmailbox: cyrus: lrswipkxtea: Mailbox does not exist localhost> sam user/ cyrus all setaclmailbox: cyrus: lrswipkxtea: Mailbox does not exist localhost> lam user/ Mailbox does not exist localhost> lam user/"" Mailbox does not exist localhost> ^D [cyrus@posthamster ~]$ ls -l /var/spool/imap/user/ total 2180 drwx------. 2 cyrus mail 4096 Oct 1 2012 drwx------. 2 cyrus mail 4096 May 7 08:53 10000 [...]

Obviously the handling of undefined variable substitution in cyradm is somewhat inconsistent, preventing me from deleting the mailbox the same way it was created.

Any ideas?

TIA T.