Mailman instance suddenly stopped working

Hello, My ancient mailman installation, 2.1.9 (yes, I know, I'm in the process of decommissioning it) suddenly stopped working overnight. When I send a test message to a test list, I see it being received by sendmail in /var/log/maillog: Aug 11 09:19:53 mailman sendmail[29533]: 17BGJi9w029255: to="|/usr/lib/mailman/mail/mailman post kbowentest-l", ctladdr=<kbowentest-l@mailman.redacted.comu> (8/0), delay=00:00:08, xdelay=00:00:00, mailer=prog, pri=124726, dsn=2.0.0, stat=Sent
But then it never shows up in the mailman logs and never gets posted: [root@mailman mailman]# grep kbowentest-l /var/log/mailman/* [root@mailman mailman]#
I've restarted mailman and sendmail, and don't see any obvious problems. No configurations have changed recently aside from deleting some lists. I haven't worked on this in quite some time, can anyone point me to some emergency troubleshooting ideas?
Kevin Bowen kevin.t.bowen@gmail.com <kevin@ucsd.edu>

On 8/11/21 9:27 AM, Kevin Bowen wrote:
I've restarted mailman and sendmail, and don't see any obvious problems. No configurations have changed recently aside from deleting some lists. I haven't worked on this in quite some time, can anyone point me to some emergency troubleshooting ideas?
See https://wiki.list.org/x/4030723
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
participants (2)
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Kevin Bowen
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Mark Sapiro