I've finally arrived at a (for me) stumper. ISA set up, running perfectly. Using it for the servers on the network only, workstations passing through linux firewall. TS & VPN function flawlessly. I went to set up Intrusion Detection Alerts, so that it could send an email to my pager - no way Jose ! No matter what I tried it will not connect to the SMTP server I list (or any other fro that matter). SMTP server is 'outside' of ISA domain, but I do have relaying privileges to & through it that are set by IP not host name. It does not require authentication to send or relay. DNS is working in & out of domain perfectly, and I can ping the server. I then set up the fake Identd server (from ISA CD) as it is a linux mail server, and have set up ISA (or so I believe) to allow Identd, SMTP, & SMTP Server through - still no go. Connection just simply fails outright (or acts like a time out). Can anyone think of anything I missed ? Paul Nuernberger