courier-base 0.47-13ubuntu2 (ia64 binary) in ubuntu dapper

Courier Mail Server - Base system
 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.
 .
 This package provides the functionality needed by all Debian courier packages
 like some configuration files, helper programs and the Courier TCP server
 daemon.