We've had this happen on 2 separate occasions.
When we first setup our Smartermail server we setup several domains. These domains have never been an issue.
A couple months later we added 2 new domains. About a 5 days later we get reports about message sizes and mailbox size being exceeded. The messages were way smaller than what we would have set. When we looked at the domains settings we discovered...
--Disk space set to 267151 or something like that, definitely not a default.
--Max message size 10
--Max users 500
--Require SMTP Auth was turned off
--Force HTTPS was turned off
The only setting that we customized that was still present were the autodiscover settings.
We correct those problems then about 3 months pass before we add more domains. This time we add 5 domains this past Friday 02/23. This morning, 03/01 we start getting reports about exceeded message size. Sure enough all 5 of the domains we added had settings reset in the same manner with the same values.
Has anyone encountered a similar issue? Can anyone suggest a point to start troubleshooting this issue?
Server 2012 r2 x64
SmarterMail 16.3.6551 Enterprise