Reject posts from anonymous proxies using RBL

[user3]

That is a large list of RBLs: http://moensted.dk/spam/

I think the conference can check several RBLs in sequence, as the antispam program SpamAssassin do.

And it really works....

[user3]

You know, in the world of e-mail servers use of RBLs (Realtime Blackhole List) to reject messages sent from open relays, proxies, spammers is a common practice.

Some of the RBL services...