How do you set up SBS2003 to work seamlessly with a separate linux

[jasybee2000]

postfix mail server? I have a working linux postfix mailserver on a windows network and I would like to set up the Small Business Server 2003 so that it works seamlessly with it if possible to be able to get the users email to and from it via outlook via their windows logon. The Linux mailserver has a different email domain to that of the domain controller. The email accounts are in the UNIX username format. IE. joebloggs which goes to joe@emaildomain.com. I can connect to the linux server via pop3 and imap no problem but just wondering if there is a fairly painless way to integrate this into the system for easy email transit? I think the sbs2003 server doesnt have roaming profiles set up and the users store their files locally for some bizarre reason. The sbs2003 wasnt set up by me as i'm more a Linux person than Windows Server. Any help on this would be greatly appreciated. Thanks In Advance.

[ejdbroker]

Why dont you setup the SBS server to pop the mail into the exchange accounts? Or you could use exchange instead of pop. Just forward (pass through) the mail from the linux box to the exchange box. In that situation the linux box would just be a mail gateway of sorts. It would allow you to filter the mail on the linux box and pass the clean mail to the exchange server. There are plenty of docs on how to do this out on the net.