suggestion for linux mail server

[gboyce-qL0WqcyiFk9Wk0Htik3J/w at public.gmane.org (Gregory Boyce)]

On Tue, 7 Apr 2009, Dave Peters wrote:

> I am looking for any suggestion for mail server. The mail server is 
> capable to send over 15 million mails every month.

Are you talking about a mailer daemon like sendmail/postfix/exim, an imap 
server like cyrus/dovecot or both?

I tend to prefer postfix myself for a mailer daemon.

For an IMAP service, dovecot does very well for a simple system where 
every user has a shell account on the system.  If you want a hosted 
solution where users don't have direct user accounts on the system, Cyrus 
does very well.

--
Greg