smtpd is licenced by Obtuse Systems Corporation and has a modified GPL license Note: smtpd 2.0 does very similar things to this

I realized that my previous work with smap wasn't fully redistributable, so i looked for another daemon which was, and found smtpd. Personally, i like it better than smap (good job to the folks at obtuse).

As always, his is a work in progress, please check this page for bugfixes/enhancements, or send them to me (hagan@cih.com). I'm looking to learn how to beat spam from you folks in netland.

I actually updated this so that it works and points to the software!

• Received a big patch from Phil Homewood which fixes a lot of bugs
• put in regex matching for spamdomains and rcptdomains
• put in rcptdomain support -- so you can block by recipient as well as sender
• Fixed the Makefile entry for SPAMDOMAINS_FILE so that it points to /etc/spamdomains instead of the erroneous /etc/localnets
• Moved all file definitions to the Makefile to ease configuration
• Blocking of spam by network
• Dns screening of addresses, make sure that from addresses have any of IN_A,IN_MX,IN_CNAME records
• Concept of internal and external machines and domains
  • internal machines may send mail to wherever
  • external machines may only send to internal domains (no reflecting)
  • external machines optionally can be restricted to:
    • not sending mail appearing from an internal domain
    • not sending mail appearing from a local user (mandate an @ site)
    • optionally have a user@site where site has either a valid MX or A record
• inverses of many of these concepts (local hosts, local domains) are also in effect

A better(?) description can be had.

Still want it? grab the enhanced smtpd package!