[Announcements] Mailman3.com servers upgrade

Dear Mailman3.com users! In the last few days, all the servers have been upgraded to the latest code. There were multiple improvements in the Mailman code and a few bugs that have been fixed: mailing list owners can remove and reattach threads <https://gitlab.com/mailman/hyperkitty/-/issues/261> in the archive now, Hyperkitty renders messages correctly <https://gitlab.com/mailman/hyperkitty/-/issues/490>, and some domains with an irregular DMARC record are not blocked <https://gitlab.com/mailman/mailman/-/issues/1109> by Mailman anymore. If you experience glitches in the Postorius/Hyperkitty UI, please perform a hard refresh of the page in your browser. New IT