Exchange Dynamic Distribution grp to filter some domain users to receive email only.

Question

Hi guys,

I already existing DDL grp created for office1 users. the users in office1 contains users from different email domain such as @StEv .com and @Company portal .com

currently, we decided not to let @Company portal .com users to receive the emails.

I checked the DDL filter rule, not sure what is the parameter to put for this.

can anyone coach me this? TQ in advance.

Answer 1

You can add a condition (or exception) to your rule, based on the domain part of the UPN or EmailAddresses. For example:

(WindowsLiveID -eq '*@tenant.onmicrosoft.com')   

where WindowsLiveID value will match the UPN (used as workaround as UPN field doesn't support the corresponding filter). Alternatively, you can use fields such as Company or any of the customattributeXX values.

Answer 2

There is also a way to understand exactly from which user this filter is applied with a GET on the DDL?

Answer 3

Hi @SQ ,

Welcome to the Microsoft Q&A platform!

Through my tests, in Dynamic Distribution Groups, we don't have such a direct option to restrict members of specific domains from receiving email.

In your case, we recommend that you create a new dynamic distribution group based on a specific domain.

New-DynamicDistributionGroup -name "All Users - Domain Name" -RecipientFilter "(RecipientTypeDetails -eq 'UserMailbox') -and (EmailAddresses -like '*@contoso.com')"  

Besides, if you do not want to create a new DDL again, then you can also set up the following rule that users who are in a dynamic distribution group and have a domain of @Company portal .com will not be able to receive email.

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