First off I'd just like to thank Scott U. and all the other pfsense developers!  Keep up the great work!

I've used the following guides as reference already:

PFSense Multiwan HOWTO - Daniel Solsona

BSD Dual Wan Router
http://www.netlife.co.za/content/view/34/34/

PFSense Dual WAN
http://www.networkblog.net/archives/2007/01/network-product-review-pfsense-101-bsd-based-firewall/

My configuration is as follows:

PFSense 1.2 beta 1
P4 1.6Ghz, 2GB of PC21000 DDR
3 x 3Com 3C905B's

LAN - 192.168.0.1
WAN - Comcast Cable / DHCP (24.62.xxx.xxx)
OPT - T1 - Static (216.204.xxx.xxx)

All other traffic aside from e-mail can use the WAN (Comcast) connection.

Presently, I cannot get e-mail to work properly when I have both connections hooked up using the rules I have listed below.

See screenshots for config/rule details

http://xs.to/albums/11814106576221124752088.html

Thanks in advance for any assistance!