Title: Using Telnet to connect to Exchange 2003 POP3 mailboxes and using SMTP to send e-mail for troubleshooting purposes Author: Marc Grote Summary: In this article I will give you tips for troubleshooting Exchange 2003 POP3 access and SMTP E-Mail transfer using the good old Telnet client. Why am I writing an article about POP3 and SMTP troubleshooting with the help of Telnet? Telnet gives you some powerful information about every connection step for POP3 or SMTP processes. Link: http://www.MSExchange.org/pages/article.asp?id=674