How to restrict who can send email to cloud O356 group?

[Amit Gupta]

Where one could set or control permission to use/send email to cloud O365 group (we want to restrict who can send), We’re able to do the same on the email enabled on-premise SGs and distribution groups?

[#2]

You can use the exact same parameters as with "traditional" groups, only difference is you have to use the Set-UnifiedGroup cmdlets. The parameters are:

AcceptMessagesOnlyFrom
AcceptMessagesOnlyFromDLMembers
AcceptMessagesOnlyFromSendersOrMembers

RejectMessagesFrom
RejectMessagesFromDLMembers
RejectMessagesFromSendersOrMembers

RequireSenderAuthenticationEnabled

And you can also use Transport rules.

[#3]

Thanks for this info Vasil. For a non-techie, can you explain how we would set these send permissions? 

Thank you!

[#4]

Connect to Exchange Online powershell:

https://docs.microsoft.com/en-us/powershell/exchange/exchange-online/connect-to-exchange-online-powe...

Then see the following link:

https://docs.microsoft.com/en-us/powershell/module/exchange/users-and-groups/set-unifiedgroup?view=e...

/ Adam

[#5]

Thanks Adam! I'll connect with my IT dept for support 🙂

[#6]

No problem 🙂