DL membership

Question

Hi All

i am using exchange 2016 hybrid environment. we create users in exchange onprem and migrate to exchange online. i have dynamic DLs in exchange online. i have a user lets say user1 i want to know he is member of how many exchange online dynamic DLs. From Azure AD i am not getting his membership info for dynamic DLs, it is showing only for static DLS i.e(From AzureAD under users-->user1 when i click groups i dont see he is member of any dynamic DLs.) experts guide me.

Answer 1

@Roger Roger

You could use the script below to check which dynamic distribution group this mailbox contained in: Modify this part before running where{$_.Name -eq "user1"})

$groups = Get-DynamicDistributionGroup -ResultSize unlimited  
  
foreach ($group in $groups){  
    $Temp = Get-DynamicDistributionGroup -Identity $group.Name  
    If (Get-Recipient -RecipientPreviewFilter ($temp.RecipientFilter) -OrganizationalUnit ($temp.RecipientContainer) | where{$_.Name -eq "user1"}){  
        Write-Host $group.Name  
    }  
}  

There exists an issue with this script, if user1 is contained in a nested group for this dynamic distribution group, it cannot be found out.

I suggest you try another way, you can find the correct group even if user1 is contained in a nested group:

Create this rule for dynamic distribution group, then send emails to this dynamic distribution group. If user1 received that email, if means user1 contained in that group, other group members will not receive email.

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