[Alfa1]

Originally Posted by pedigree

this is what www.stopforumspam.com has been doing for several months, accumulating a database of 80,000 known forum spammers and provides code (and a vbulletin mod) for access/submitting to it, allowing spambots to be denied registration.

Yes, but this also seems to check the validity of email addresses, which is a big plus. Maybe this can be combined with vbstopforumspam?

Originally Posted by y2ksw

• An incoming email address is formally checked and rejected if invalid.
• If no IP match was found, it connects to the world-wide spammer databases in a certain order, and if there is a match, the IP is stored locally and the user email rejected.
• If the email address apears not to exist (MX lookup & initiation of email transmit, quit before sending), the user email is stored to the local database and will be rejected.
• If none of the above applies, the user may register. At this point it is sure the email account is not coming from a known spammer and the address is really valid.