XFOR: Online Resources for Spam Mail Testing and Information

There are a number of Web sites that provide information and test resources to combat "spam" mail, or junk mail. The content of the sites varies, but most provide the following information:

• Explanations of spam mail.
• Guidelines for how to prevent spam mail.
• Sources where you can report or register hosts that allow open relaying.
• Tools to determine if a Simple Mail Transfer Protocol (SMTP) host is open to relay mail.
• Tools to determine Domain Name System (DNS) information.
• Request for Comments (RFC) specifications or links to the RFC specifications that pertain to relaying.

The following are links to Web sites that offer spam information. This list is not intended to be a comprehensive list of all of the sites available, nor does it imply an endorsement by Microsoft.

• Network Abuse Clearinghouse:
  http://www.abuse.net (http://www.abuse.net)
• Sam Spade:
  http://www.samspade.org (http://www.samspade.org)
• Mail Abuse Prevention System (MAPS):
  http://www.mail-abuse.com/ (http://www.mail-abuse.com/)
• Njabl.org is Not Just Another Bogus List:
  http://www.njabl.org/ (http://www.njabl.org/)

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.