Hi All, I've looked at the articles in the exchange kit and did not really see anything much related to back to back SMTP with exchange and multiple virtual servers. It is amazing that from some sources I receive in email just fine on my own servers, but when I switched my isalist account to my own servers I received 3 emails then none, I'm unable to receive those items and had to switch back to my msn.com account. I would rather use my own mail servers. I made sure that I did not have SMTP 25 packet filters set and also made sure that protocols were set. I must be missing something. I will have to adopt the Missouri attitude. If someone has a simple Visio diagram showing the inbound from external isa > DMZ > Internal ISA sample setup please email it to me. And, what the possible protocols should look like I would appreciate it. Thank you, Joseph