Download the signature for the tarball.
Download my key
gpg-ezmlm is a set of scripts which add to the ezmlm package the ability to reencrypt messages sent to the list.
There was a mailing list (running gpg-ezmlm) for discussion of crypto-ml efforts. Sadly, my mail server died, and I have yet to restore it. Keep bugging me.
Why bother with an encrypted mailing list?