-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 05/03/2010 16:35:07, John wrote: > Is there any reason one couldn't do something similar for SMTP? Maybe > a little wider sample window, like 10/300? Or would you end up blocking > too any things that you don't mean to block? Anyone played with this > for SMTP?
You can do this with SMTP, but I'm not sure quite how useful it would be given the different usage patterns for e-mail. (I've applied it quite happly for FTP servers, for example) If you want to do some pf-level antispam stuff, then look at spamd -- in the ports as obspamd to prevent confusion with SpamAssassin's spamd. http://www.openbsd.org/cgi-bin/man.cgi?query=spamd&apropos=0&sektion=0&manpath=OpenBSD+Current&arch=i386&format=html This implements greylisting, greytrapping and teergrube against addresses blacklisted as spam sources. Last I checked it only worked on IPv4 though. It's a fairly light-weight means of eliminating quite a lot of spam, but it should be used in conjunction with other MTA mediated anti-spam techniques, for example SpamAssassin Cheers, Matthew - -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkuRNOEACgkQ8Mjk52CukIzcGACePJLeg/yorVq8vpVA6Nr7WBbI FksAn0hkNVrOo/m9o5gClh7J7zGoWdvU =JW5l -----END PGP SIGNATURE----- _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[email protected]"
