Email sent to and Exchange online resource is being auto-deleted.

[Paul Long]

First, we're in a hybrid environment and have been that way for a few years.  Everything has worked great, until about a month ago. At that time, email sent to resources started being auto-deleted.  Calendar meeting requests still work fine, but messages sent to the resources are being deleted.  This is not happening to all resources (yet), only a few.  Has anything changed in Office 365 to cause this change in behavior?

Thanks.

[#2]

It's an option of the resource mailbox:

Set-CalendarProcessing roommailbox -DeleteNonCalendarItems $false

For more info refer to the cmdlet help: https://technet.microsoft.com/en-us/library/dd335046(v=exchg.160).aspx

In addition, you might want to check for rules, both Inbox and Transport ones.

[#3]

Vasil,

Thank you for the script.  But, within 24 hours of my posting, everything started working as normal. Makes me think Microsoft did something on the backend.

Paul

[#4]

@VasilMichev Thanks a lot mate! You saved me some precious time. Cheers

[#5]

YEP!!!
You're a savior!
Worked like a charm!

[#6]

@Paul Long 

Did you have a chance on message trace?

[#7]

@Kidd_Ip 

Nope.

Message Trace didn't help me solve the issue.