New-DynamicDistributionGroup -DisplayName "My Dynamic DistributionGroup" -Name "My Dynamic DistributionGroup" -OrganizationalUnit "OU=DistributionGroups,OU=Mailing,DC=contoso,DC=com" -Alias "MyDistGroup" -RecipientContainer "
OU=Users,OU=Marketing,DC=contoso,DC=com" -RecipientFilter {MemberOfGroup -eq "CN=Some Other Group,OU=Groups,OU=Marketing,DC=contoso,DC=com"}