Distribution Groups in O365 from Azure AD sync - Set so only members can send emails

[IT_Man_Dan]

Morning all,

 

We've just got rid of RM unify and now manage our own O365 tenant using AD azure sync.

I haven't used this myself for at least 5 years so need some quick assistance please regarding distribution groups.

 

I've created a staff distribution group in AD which sync's across to O365. When I go into the exchange admin center and try to set so that only members of the group can email the group I get an error message saying that the group cannot be edited as it's synced from AD.

Where can I set it quickly so that only group members can send emails please?

 

Thanks

[snagrat]

You can set the authOrig attribute to define who can email the group

[IT_Man_Dan]

You can set the authOrig attribute to define who can email the group

 

Thanks although I now get the error 'There is no editor registered to handle this attribution type' so will need to look at why that is.

[1an]

Another way to solve this is create a rule in the Exchange Admin Centre in Office 365.

 

In mail flow you could make a rule along the lines of: if email sent to group, delete, except if is received from…

[3s-gtech]

I think that’s one of the situations where MS recommends you still have Hybrid, to manage these rules. Pretty ridiculous to go back, of course. I suspect if you have a DC on Azure that ECP online can write to, it’d work fine.