Binary package “courier-pop-ssl” in ubuntu precise
Courier mail server - POP3 over SSL
The Courier mail transfer agent (MTA) is an integrated mail/groupware
server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP,
SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list
services within a single, consistent, framework.
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POP3 over SSL is handled by the regular POP3 daemon from courier-pop
in conjunction with the SSL/TLS wrapper supplied by courier-ssl.