May I set Microsoft 365 Group mailbox's "Received messages maximum size" to 150M?

[Yan_Chen_Sironax]

Hi there,

I have set the "Default message size restrictions" on users mailboxes to 150M. 

Is there any method that I can set Microsoft 365 Group mailbox's "Received messages maximum size" to 150M?

Thanks!

 

[#2]

Yes, you can use the Set-UnifiedGroup cmdlet: https://docs.microsoft.com/en-us/powershell/module/exchange/set-unifiedgroup?view=exchange-ps

[#3]

Thanks! I have set as I need.
The only thing make me a litte confused is " The default value is unlimite" but actually is 35MB.
Thanks again！

[#4]

Well, generally speaking you also need to check the company-wide values (Get-TransportConfig), just to be on the safe side. Anyway, glad you solved it.