Linux Mail Server

[Timothy J. Finucane]

My company has decided to move our current mail servers to a Linux based
platform. We are planning on setting up one server dedicated to being
the mail server for multiple domains. Can anyone out here point me to
some good reference materials I can use to learn about setting up a
Linux mail server? Outside of sendmail, are there is there any other
software used to run a mail server?

Thanks,

Tim

-- 
“They that can give up essential liberty to obtain a little temporary 
safety deserve neither liberty nor safety.”    —Benjamin Franklin