CustomAttributeX -ne $null not working in -RecipientFilter

Question

I am trying to create a dynamic distribution Group that will only return users who have CustomAttribute9 with numeric string and exclude any users who do not have that attribute populated. Here is my filter
New-DynamicDistributionGroup -Name GCI-AaronPTest -RecipientFilter {(RecipientType -eq 'UserMailbox') -or (RecipientType -eq 'MailUser') -And (CustomAttribute9 -like '0*') -and (Customattribute9 -ne $null)}
This is still returning users who have blank field for CustomAttribute9. Any help would be appreciated.

Answer 1

Hi,
I recommend you try the following command and check the result:
New-DynamicDistributionGroup -Name GCI –Alias GCI -RecipientFilter {(RecipientType -eq 'UserMailbox' -or RecipientType -eq 'MailUser') –And (CustomAttribute9 -like '0*' -or Customattribute9 -ne $null)}
Hope this helps!
Thanks.
Niko Cheng
TechNet Community Support
(RecipientType -eq 'UserMailbox' -or RecipientType -eq 'MailUser') –And (CustomAttribute9 -like '0*' -or Customattribute9 -ne $null)
this will include  all mailbox or mail user which  have customattribute9 other than like '0*'   too .
so , replace just    -or   with -and   in
(CustomAttribute9 -like '0*' -or Customattribute9 -ne $null)
to achieve the result.
MCITP - Exchange 2010 | MCITP - Windows Server 2008 R2