Secure Messaging with MicrosoftВ® Exchange Server 2003 (Pro-Other)

Internet RFC 821 ( http://www.ietf.org/rfc/rfc0821.txt ) defines the SMTP protocol, and it remains the definitive standard for how SMTP relaying is supposed to work.

RFC 2552 ( http://www.ietf.org/rfc/rfc2552.txt ) defines the SMTP AUTH extension and explains how it works.

RFC 2635 describes spam, defines what it is, and explains why people hate it so much. Although this might seem redundant, the RFC s explanation is clear and suitable for end users. It s available from http://www.ietf.org/rfc/rfc2635.txt.

For more details on the differences between SMTP virtual servers and connectors, see the Exchange Server 2003 Administrator s Companion by Walter J. Glenn and Bill English (Microsoft Press, 2004).

The Internet Mail Consortium maintains an interesting report on unsolicited bulk e-mail at their Web site ”see UBE: Definitions and Problems at http://www.imc.org/ube-def.html.

Dr. J rgen Mash maintains a list of RBL lists at http://www.moensted.dk/spam . The list is not 100 percent up to date, but it contains links to more than 500 filtering lists and services. This might be useful if you re considering a perimeter spam-blocking solution.