sfcmilter - Sender Forgery Checker mail filter module
Description:
Sfcmilter is a plug-in that checks whether the SMTP-level mail sender is the same as the headers-level mail sender. It is intended to be used in conjunction with spfmilter. Spfmilter only checks the sender address in the SMTP transaction; that's not a bug, it's just how SPF is defined. But it does leave you open to messages that use an honest SMTP-level address but fake the address in the message itself. Sfcmilter closes this hole by checking that the address in the message matches the address in the SMTP transaction. Since spfmilter doesn't need to look at the message body, it's more efficient to run. Therefore, you should run spfmilter first. Any messages that spfmilter lets through then get checked by sfcmilter, and if they are possible forgeries sfcmilter will add a header saying "X-Sender-Check: possibly forged". Then a third layer of the delivery process, such as bogofilter or SpamAssassin, can look for that header and weigh it appropriately to decide if the message is junk or not.
Homepage: http://www.acme.com/software/sfcmilter/
License: ACME Labs Freeware License
Vendor: city-fan.org repo http://www.city-fan.org/ftp/contrib/
Packages
| sfcmilter-0.62-1.i386 [29 KiB] |
Changelog by Paul Howarth (2005-10-21):
- update to 0.62 - clean up spec file - don't delete user/group accounts on package removal - ghost the socket and pidfile rather than removing /var/run/sfcmilter in %post |