What need package if I want create mail gateway?

[akong]

Hello,
I have mail server under pfsense inside and use 192.168.xx.xx IP address.
I want create a mail gateway to filter spam mail and virus mail.
What need package to create mail gateway?
I know it's must have mailscanner.Could I need postfix forward package?
I use pfsense 2.2.4.
Thanks a lot.

[vbentley]

My preference is to create a mail gateway on a separate Bastion Host located on a DMZ network.
This avoids installing packages to handle mail filtering on pfSense.

What other advantages can you think of for having a mail gateway on a bastion host?

[biggsy]

@akong:

Could I need postfix forward package?

Postfix forwarder is a bit broken on 2.2.x - unless you want to try the workaround found here.