Issues creating dynamic distribution group with PowerShell

Question

I am trying to create a DDG with the following filters: Mailbox Users, specific OU and not member of a certain group. This script works fine (minus the exclusion):
New-DynamicDistributionGroup -Name "1Test1" -RecipientContainer "OU=ABC,DC=xyz,DC=com" -IncludedRecipients 'MailBoxUser'
\When I change the script to exclude members of the group the DDG is blank:
New-DynamicDistributionGroup -Name "1Test1" -RecipientFilter {(RecipientType -eq 'UserMailbox') -and (MemberOfGroup -ne "CN=1ExcludeDynamic,OU=ExchangeGroups,DC=xyz,DC=com") -and (RecipientContainer -eq "OU=ABC,DC=xyz,DC=com")}
Any ideas will be appreciated.

Answer 1

All right. That's a good thing. Now create another new DDL using the Powershell cmdlet and the values you got from the "RecipientFilter" and "RecipientContainer" properties. Then verify that you get the same results as you do when you ran this on the one
you created with the GUI:
Get-DynamicDistributionGroup
'NewGroup' | fl Name,RecipientContainer,RecipientFilter,LdapRecipientFilter
and
$g=Get-DynamicDistributionGroup NewGroup
(Get-Recipient
-RecipientPreviewFilter $g.RecipientFilter
-OrganizationalUnit $g.RecientContainer).count
If you do, then run a Get-DynamicDistributionGroup GROUPNAME | Set-Dynamic -RecipientFilter
{(RecipientType -eq 'UserMailbox') -and (MemberOfGroup -ne "CN=1ExcludeDynamic,OU=ExchangeGroups,DC=xyz,DC=com")}
Then see if it works as expected. If it doesn't try this:
Get-DynamicDistributionGroup GROUPNAME | Set-Dynamic -RecipientFilter {(RecipientType -eq 'UserMailbox') -and -not (MemberOfGroup -eq "CN=1ExcludeDynamic,OU=ExchangeGroups,DC=xyz,DC=com")}
--- Rich Matheisen MCSE&I, Exchange MVP