Confirming fix - I built 6.2.60~dfsg-3 on Buster a couple weeks ago and dkim has been working well.
Due to recent enforcement at Yahoo and Gmail I needed to enable DKIM/DMARC/ARC for all lists to get delivery. Due to the FCGI problem I also switched over to systemd, which is working (in the low-load configuration): $ cat wwsympa.service [Unit] Description = WWSympa - Web interface for Sympa mailing list manager (service) After = syslog.target sympa.service [Service] User = sympa Group = sympa ExecStart = /usr/lib/cgi-bin/sympa/wwsympa.fcgi StandardOutput = null StandardInput = socket StandardError = null Restart=on-failure [Install] WantedBy = multi-user.target $ cat wwsympa.socket [Unit] Description = WWSympa - Web interface for Sympa mailing list manager (socket) [Socket] SocketUser = www-data SocketMode = 0600 ListenStream = /run/sympa/wwsympa.socket [Install] WantedBy = sockets.target -- Bill McGonigle, Owner BFC Computing, LLC https://bfccomputing.com/ +1.855.SW.LIBRE b...@bfccomputing.com @bfccomputingllc https://bfcc.co/bill.vcf