customers are reporting issues with sending mail via mail1. When trying to send via horde db connection errors are reported.
Outlook is receiving internal server errors and/or timeouts.
I have lodged this a ticket
ticket CUV-71497-557
We have posted about the webmail, the via outlook was very temporary, we fixed it, we also have horde/webmail running at the moment. We need to do a final maintenance later as posted, to resolve.