[Dovecot] imaps on alternate ports

I'm trying to test out dovecot 1.0 alpha 3 prior to an upgrade from dovecot-0.99.14, but I cannot get imaps listening on anything other than 993.

I've tried putting

listen = *:2023

in the global section or in the imap { } section.

No luck. What is the proper format for a config that only runs imaps and only listens on a particular port?

-- Andrew Clark Campus Network Programmer University of California, Santa Barbara andrew.clark@ucsb.edu (805) 893-5311