[Dovecot] pop3s fails, imaps works great

hey all-

i'm running dovecot-0.99.10p2 on OpenBSD 3.4-snapshot (installed from ports). i have had 0 problems with imaps -- it's been running like a charm! however, i'm trying to get pop3s set up for some of my users, but i can't seem to connect from ANY client.

in /etc/dovecot.conf, i've got:

protocols = imaps pop3s

and i've also got pop3s_listen set up with the same IP as imaps. i'm using vpopmail for auth.

nmap shows that port 995 is open, and netstat does show an established connection to pop3s when i attempt to connect, but i see no activity in the dovecot log, and the client just churns and churns and eventually i have to quit it since i get no response.

any ideas what i could have wrong, or how to test?

thanks in advance, darren david