In case it helps anyone, I've built a .deb package from here: https://salsa.debian.org/debian/opensmtpd
I'm happy to post it to the list, but if you want to build yourself, this worked for me (after downloading the repo): $ mkdir deb $ cd deb # apt install debhelper-compat bison libdb-dev libevent-dev libpam0g-dev pkg-config po-debconf $ dpkg-buildpackage -b -rfakeroot -us -uc # dpkg -i opensmtpd_7.3.0p1-1_amd64.deb Everything seems to be working fine including filter-dkimsign p.s. If Ryan Kavanagh from Debian reads this list, please ignore my email as I got it sorted.
