I've got a Postfix with Courier IMAP mail server mostly set up. IMAP authentication works as expected on port 143 (when SSL is disabled), but whenever SSL is enabled or port 993 is used, nothing happens.
Literally, the server sends no data:
openssl s_client -connect localhost:993
no peer certificate available
No client certificate CA names sent
SSL handshake has read 0 bytes and written 317 bytes
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
I've made sure that
TLS_CERTFILE, specified in
/etc/courier/imapd-ssl, exists and is referenced correctly.
I've also made sure
I'm at a loss...