Protocol: IMAP over SSL
Port: 993 (standard)
Port: 25 (standard)
Security: TLS plain-authentication
Note: see below for MS Outlook
You may want to install the self-signed certificate of the webserver in order to avoid warnings by your browser.
MS Outlook 2007 supports Port 25 with TLS for the outgoing server.
For MS Outlook 2003 please use Port 465 with SSL for the outgoing server.