Hi everyone,
We have an odd case, several groups have suddenly had their mailboxes seem to disappear.
It has coincided with the issues with people being able to reply to mail enabled groups, but it seems to stem beyond that.
It's like some level or corruption is affecting them, the group is still present, teams site still present but mailboxes disappear from outlook, bounce backs then when trying to email them.
If we use PowerShell to query them, nothing present, check deleted groups, nil - change logs show nothing happening with it also.
Microsoft support being as absolutely useless as they are, won't escalate the case
I know they had an issue with groups mailboxes receiving mail however the fact that trying to view the group mailbox in exchange online management throws an error, the mailboxes that are showing this error are also now gone from outlook clients access, they receive bounce backs.
But they are just dumping this under the "check the public advisory for the issues" and "we will escalate the display problem with them, it's just a UI issue because you can view the group details under the groups section of the management console so it's fine, it's just a bug in the exchange management console"
We have another separate client where this exact same thing has occurred but with 1 users mailbox, Microsoft support still can't figure out where the mailbox just went, it's just disappeared and again appears corrupted, but OneDrive, SharePoint, Teams etc all still present.
Has anyone else experienced similar?
Cheers