Den 2012-06-29 22:12, Andrew Beverley skrev:
+1. I do it that way: it works well with fast delivery.
one could hack mailman to use some python code to sign mails, it already can remove senders dkim key if wanted, and python have the needed dkim module, suggest to mailman maintainers :=)
the most simple signer i have found is amavisd-signer part of amavisd recent tarballs