Mail4 will be undergoing maintenance to be done by Psoft, on Dec 24, Saturday 3:00 AM EST.
Expected outage window will be around 30 mins.
No mails will be lost as the secondary mailserver is active and will accept mails for the domains(with mail-relay enabled). For others, sending mailservers will retry after some time.
With a slight delay this maintenance will be starting in 5 minutes.
Up to this point mail4 has remained online, it now needs to be taken to single user mode for some further maintenance. It will be offline for approximately 30 minutes or so.
Mail4 has been back online for quite some time, it was only offline for about 10-12 minutes instead of 30.