Tools

Mail Servers (MTAs)

Postfix

http://www.postfix.org/

Postfix is a widely used alternative to Sendmail. Postfix development focuses on speed, easy administration, and security.

Message Sniffer can be integrated with Postfix systems using SNFMilter or as a postfix filter using a simple bash script.

Postfix is included in many linux distributions along with amavis and SpamAssassin. On systems like these we recommend either using SNFMilter or SNF4SA.

Using SNFMilter many messages can be rejected during the SMTP conversation which saves system resources. Messages that are allowed to pass through will contain X-headers that can later be scored by SpamAssassin. (You will need to create these rules to suit your needs. You can customize theX-headers that are injected also.)

Using SNF4SA allows SpamAssassin to call SNFServer directly through our XCI protocol. The result is that two additional tests appear for each message -- one representing the source IP reputation based on GBUdb information, the other is a score assigned from any content rule matches.

Please email support@armresearch.com with any questions.