I did the same thing on the console and this is what happens:

bash-3.2$ openssl s_client -connect example.com:993 CONNECTED(00000003) [...] Server certificate -----BEGIN CERTIFICATE----- [...] -----END CERTIFICATE----- [...] CA

No client certificate CA names sent

SSL handshake has read 4595 bytes and written 322 bytes

New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA Server public key is 2048 bit Compression: NONE Expansion: NONE SSL-Session: [...]

• OK Dovecot ready . login admin@example.com secret . OK Logged in. . select INBOX
• FLAGS (\Answered \Flagged \Deleted \Seen \Draft KMAILFORWARDED KMAILTODO KMAILWATCHED KMAILIGNORED $FORWARDED $TODO $WATCHED $IGNORED NonJunk)
• OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft KMAILFORWARDED KMAILTODO KMAILWATCHED KMAILIGNORED $FORWARDED $TODO $WATCHED $IGNORED NonJunk \*)] Flags permitted.
• 4 EXISTS
• 0 RECENT
• OK [UNSEEN 1] First unseen.
• OK [UIDVALIDITY 1230136990] UIDs valid
• OK [UIDNEXT 77] Predicted next UID . OK [READ-WRITE] Select completed. . copy 1 Trash closed