I've published POP3S on an Exchange Server, but it isn't working. I had it working at one point last week; not sure what I might have done to break it. To test, I set up a laptop on the outside network and am running a packet capture on Outlook Express. I'm seeing the connection open from the laptop to port 995 on ISA, but the source ip address of the response is the internal ip address of the Exchange server. Shouldn't this source address be the external ISA address? Jeff