ActiveDirectory module doesn't support Contacts in Distribution Groups

Question

Hi,
In my AD I have several groups, of the Distribution type, whose members are a combination of Contact objects and other Distribution groups.
If I use the Get-ADGroupMember cmdlet, the members which are Contact objects are not returned.
If I use the Add-ADGroupMember cmdlet to add a Contact object to a Distribution group, an error is thrown claiming the Contact object cannot be found (even though Get-ADObject finds it successfully).
As a workaround I've used ADSI to retrieve the Distribution groups and manipulate the Contact members but I feel there is a bug with the ActiveDirectory PowerShell module artificially restricting which AD object types can be members of groups.
Regards,
Jason

Answer 1

If you have Exchange,you may using cmdlet - Add-DistributionGroupMember or using adsi.
$group = Get-ADGroup "CN=Contacts,DC=contoso,DC=com"
$user = Get-ADObject -Filter {name -eq "Contact1"}
$agroup = [ADSI]"LDAP://$($group.DistinguishedName)"
$auser = "LDAP://$($user.DistinguishedName)"
$agroup.Add($auser)