Log Message:
Initial import of cyrus-imapd 2.1.9.

Cyrus imapd provides IMAP, POP3 and KPOP services for mail.  It differs 
from other IMAP servers by providing a "sealed" server where users do not
normally login directly to the server.  The mailbox database is private to
the Cyrus IMAP system.  Cyrus also provides server side mail filtering
using sieve (see RFC 3028)