We have an extremely obnoxious user who we banned by username and by all the IP's that we could find from the messages he posted, using the "%" wildcard. But this guy continues to "haunt" the board by registering using a new username each time. Blocking his several IP's wasn't effective obviously. If we could see his IP when he registers, then we could block that too, but I can't seem to find a way to do this either.
Any suggestions on how we can effectively deal with this pest would be greatly appreciated, short of blocking entire domains, which as you know isn't the prudent thing to do as it blocks out dozens of otherwise great registered users.
Jeff