We have a SBS2000 Multihomed with all the upgrades running exchange/ISA and using TZO DNS mail forwarder. Our Internal IP is 192.168.1.xx Our External IP is 12.249.21.xx on the 2nd adapter with client and sharing disabled DNS Split Internal: Jedgroup.com External: www.jedgroup.com mx record is on internal jedgroup.com Exchange will not receive mail (will send). When we disable external, and put the gateway and the Internet cable on internal; then our email is received. Another point, is it possible to rename the internal zone. We're registered as jedgroup.com. and finally, we us a linksys router. When we're multihomed, we cannot contact the router on the external adapter. thanks Elliott