AFAICT, audit@FreeBSD.org has been defunct for around 10 years, and we've actively missed at least one PR  because it's still around for assignment -- can we reassign any bugs that are assigned to it to another list (bugs@ may be the most appropriate) and drop it from Bugzilla?
 bug #242938
CC'ing rwatson and csjp, in case they have other suggestions.
I think people should be using bugzilla to report issues with kernel audit, and the github project to report any bugs associated with any openbsm specific issues. Issues being reported to mailing lists could get missed.