I would also make sure that master is running - telnet localhost 143 should give you a banner similar to:
* OK host.domain.com Cyrus IMAP4 v2.1.15 server ready
Oh okay. I disable port 143 (imap) in favor of 993 (imaps). Does cyradm only connects to 143?
I'm not sure, but I'd give it a try.
I can verify that cyradm needs to connect to imap through 143/UDP. After I allowed master to listen to port 143, everything works as expected.
Regards, Norman
