> Hmm. That sounds like a good idea, maybe there already is a hook > defined that could deal with this, I'll look into it.
I could also start work on a mod_smtpd_dnsbl if the mentors feel that is worthwhile? This would look up a connecting IP address against a blacklist and return a descriptive string to mod_smtpd if the client should be rejected with an error: "550 5.7.1 Email rejected because 127.0.0.2 is listed by sbl-xbl.spamhaus.org" I'd also like to include support for RHSBL, a newer type of listing by domain names from the envelope sender address. That's used by a growing number of projects.
