Claus Assmann is a member of the Sendmail Consortium and works for Sendmail, Inc. He is the technical lead engineer for sendmail 8.12 and currently designs and implements the next generation of sendmail. His main interests in computer technology are security and performance. He studied computer science at the University of Kiel where he received his Ph.D. in 1992.
Sendmail provides support for SMTP AUTH and STARTTLS both of which allow for authentication and encryption. However, usually STARTTLS is used to encrypt an SMTP session while AUTH is used to authenticate a client. The latter is very useful to allow relaying for “roaming” users. This talk explains how to compile and configure the necessary components and how to solve problems that may occur.