This bug is part of the non-responsive maintainer procedure for sham1, following https://docs.fedoraproject.org/en-US/fesco/Policy_for_nonresponsive_package_maintainers/. Please respond if you are still active in Fedora and want to maintain maildir-utils.
I'm here and willing to do the listing. Just saw this ticket and have responded to the public mailing list message as well. Anyway, active, so I'll close the ticket as per the procedure.