Good morning list: It has been on this list, that two external interfaces are not going to work with ISA. However, in our special case, do you think the following workaround is possible: We have one internal network (192.168.10.0), one external dialup-DSL with dynamic IP. So far so good. Since we need to receive our mail from external, we have another router to a low-speed Connection (192.168.67.0), that routes to the external provider. Can we either: 1) declare the 192.168.67... network external, but provide a static route to the IP of our external mail-router (this is a fixed IP) ? 2) declare the 192.168.67... network internal and do port-forwarding (to ISA or directly to the mailserver) on the router? Thanks for any feedback... Stefan