I'm having trouble configuring ISA to map port 26 to my Exchange server. What I've done is added port 26 to the exchange default SMTP virtual server protocol and now want to configure the ISA server to open port 26 and map it to this exchange server. This I'm oping will allow inbound email. What I've done is navigate to the properties of my published exchange smtp rule clicked the traffic tab where SMTP server is selected clicked ports and selected the Send requests to this port on the published server: 26. I've tried to send messages in externally and waited but nothing is coming thru. Could I be doing this wrong? Port routing 101...SOS and I'm not seeing strait right now so any responses are appreciated.