Andrew In that case ISA only knows about one internal network. If you have separate address spaces/subnets then ISA needs to know about them in order to find them. By adding the third nic and createng a ruleset and routes ISA knows how and what it can get to that network. Otherwise, you'll get a whole lot of spoofed attacks in your logs I would have thought. Ther is no overhead really to adding a third nic, just do it!! oh yeah and http:/support.microsoft.com ________________________________ From: Andrew English [mailto:andrew@xxxxxxxxxxxxxxxxxxxxxx] Sent: Mon 7/11/2005 12:55 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: Two Internal Networks http://www.ISAserver.org 3 NICs?? Why couldn't one use setup SMTP under IIS on ISA and have the Exchange rule push the SMTP over to the ISA box and out through either network? Andrew -----Original Message----- From: Steve Moffat [mailto:steve@xxxxxxxxxx] Sent: Saturday, November 05, 2005 11:12 AM To: [ISAserver.org Discussion List] Subject: [isalist] RE: Two Internal Networks http://www.ISAserver.org 3 nics and windows rras -----Original Message----- From: Andrew English [mailto:andrew@xxxxxxxxxxxxxxxxxxxxxx] Sent: Saturday, November 05, 2005 12:04 PM To: ISA Mailing List Subject: [isalist] RE: Two Internal Networks http://www.ISAserver.org That's find but I have two networks with two different IPs. 192.168.x.x and 10.10.x.x so how do I redirect the SMTP if the machine sits on one network or the other? Andrew ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: greg@xxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist Report abuse to listadmin@xxxxxxxxxxxxx