newark rutgers wrote:

I have spoken to about 8 different techs at comcast. They tell me
that the problem will be forwarded to their next "tier" of people for
clarification and the problem should be resolved withing 72 hours.
this has been over 6 weeks now.
How can I impress the fact that it is their server problem?

The best you can do it enable diagnostic logging and show them that their
server accepts the message with that log. Once their server accepts the
message, your ISP is responsible for delivery.
http://support.microsoft.com/kb/831053/en-us
--
Brian Tillman