Title: Supporting ISA Server 2000 Publishing of Exchange Server 2000/2003 with SMTP Relays Part 1: What is an SMTP Relay and Why You Should Use One Author: Thomas Shinder Summary: SMTP relay issues are very common for Exchange Server administrators who need their mail servers to connect to the Internet. The problem is that there aren?t a lot of good descriptions of what SMTP relay is, how it works, why you want one, and what problems you might encounter with them. This series on SMTP relays will help prevent you from becoming the victim of an RBL'er and improve the performance of your Exchange Servers. Check it out! Link: http://www.MSExchange.org/pages/article.asp?id=594