That's really too bad! My wiki sends me an email whenever anyone posts,
and I haven't (yet) suffered wiki spam. I do have scripts watching the ssh
log and blocking IP addresses that have several failed logins, watching
the mail log and blocking IP addresses sendmail reports as break in
attempts and those IP addresses that hit a bunch of nonexistant email
addresses (old users deleted users, etc.), and watching the web server log
and blocking the IP address of those requesting some Microsoft file (from
a Linux system!), includes xmlrp in the URL, or includes "echo" in the
URL. I now have a few hundred IP addresses blocked. They stay blocked for
about a month, then are given another chance. Again, luckily, I haven't
had to deal with wiki spam.

Good luck!

Harold

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