Check out orthus if you are
interested in this topic. I recently completed the server-side support
for running orthrus as a pam module, mainly for managing sudo privs at the ASF.
BATV + SRS support for ezmlm
Pick up the
and reconfigure your ezmlmrc file to have the script wrap all ezmlm commands
that make use of the SENDER env var. Then regenerate all your ezmlm mailing
list alias command files with ezmlm-make -+ -e and you're all set.