Brian Kantor said:
Thanks, Steve. That looks useful, but will take some effort to adapt it to FreeBSD which is what the mailing list host is running (not Linux).
You'll need to install www/py-recaptcha
http://www.freshports.org/www/py-recaptcha/
And then update lines 17 and 40 in the patch to reflect the location of pyshared on FreeBSD (probably /usr/local/share/pyshared)
That should be it.