We'd just like to inform you that the current machine hosting all the CentOS mailing lists (on http://lists.centos.org) needs to be replaced and so the mailman service needs to be moved/migrated to a new host.
Migration is scheduled for """"Monday November 21th, 8:00 am UTC time"""". You can convert to local time with $(date -d '2016-11-21 8:00 UTC')
Expected downtime is ~1 hour (time for backup/archives to be restored, and DNS records propagation) but we hope to be able to restart the service earlier.
The new mail host will be CentOS 7 based, so mailman will jump from version 2.1.12 to 2.1.15, and we'll have proper IPv6 connectivity, meaning AAAA records for mail.centos.org and lists.centos.org.
If you have questions, comments or feedback, please join the #centos-devel channel on irc.freenode.net.
Thanks for your comprehending and patience.
on behalf of the Infra team,