On Tue Jun 29, 2010 at 02:13:08 +0000, Robin H. Johnson wrote: > Summary: > For any given valid recipient, compare the sender whitelist of exact > matches and regexes. If the sender is NOT present, issue a permanant > deny (5xx).
> Details: > For the Gentoo mailing lists, we're seeing a lot non-subscriber traffic > that just presently gets dumped to /dev/null (no list bounce saying > you're not subscribed), and I would like to outright prevent that > traffic. You shouldn't run into too much trouble with this approach; many mailing list managers such as mailman already have the facility to blackhole mails from non-subscribers, and if you're doing an SMTP-time reject then any legitimate users caught up will see a bounce so they'll know what is up. There are probably many similar plugins out there that you can be inspired by in terms of implementation, if not and you can easily find out the subscriber address via a stat(), or similar, it'd be pretty simple for us to write it for you if you want to be a guinea-pig! Steve -- Debian GNU/Linux System Administration http://www.debian-administration.org/
