I tried to inform someone in charge of the email config of the forum via forum-admins@rockylinux.org:
Emails from the Rocky Linux Forum seem to be the last mails I receive, which do get ‘dmarc=none’:
...
DMARC-Filter: OpenDMARC Filter v1.4.1 [mailsserver] DD31A20208CC
Authentication-Results: [mailsserver]; dmarc=none (p=none dis=none) header.from=rockylinux.discoursemail.com
Authentication-Results: [mailsserver]; spf=pass smtp.mailfrom=rockylinux.discoursemail.com
DKIM-Filter: OpenDKIM Filter v2.11.0 hermes.or.uni-bonn.de DD31A20208CC
Authentication-Results: [mailsserver]; dkim=pass (2048-bit key) header.d=discoursemail.com header.i=@discoursemail.com header.b="YYH8fZk0"
...
I got a response:
‘Delivery Status Notification (Failure)
Address not found, Your message wasn’t delivered to forum-admins@rockylinux.org because the address couldn’t be found, or is unable to receive mail.
...
Authentication-Results: [mailsserver]; spf=none smtp.helo=mail-wr1-f65.google.com
...
So there seem to be more problems with the forum mail server.
Thanks for the great forum.