Ask Comcast or your Exchange mail host - no one here can help you with your personal configuration issues.

--�
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, Hays Young asked:

| I just upgraded to Outlook 2007, and suddenly I am no longer able to
| connect to my exchange server that is hosted by 4smartphone through
| my Comcast internet. However, if I change the same computer over to
| my AT&T DSL internet it works just fine. What can I go to comcast
| with to ask them to change on their servers??