How to find hidden recipients, contacts and Exchange Distribution Groups in Active Directory

Exchange security
Microsoft Exchange
Is there any way that I can quickly find out who is hidden in Active Directory for Exchange recipients, contacts and Distribution Groups? In Exchange 5.5 it was easy to find out who was hidden in the Exchange Administrator as all you would have to do is go to View, Hidden Recipients. In E2K3, how do you do this?

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View -> Advanced
When you double click the distribution group and click on the memebers tab you are able to see the memebers

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  • Brucek
    You're right, this was one of the great things about the old 5.5 directory. Alas, the good old days are gone. You're going to need to use CSVDE to export AD and then massage the data in Excel. Here's what I do: csvde -f output.csv -s 'dc' -d dc='central',dc='microsoft',dc='com' -r "(&(objectClass=user)(mailnickname=*))" -p subtree -l DisplayName,msExchHideFromAddressLists Replace 'dc' with the name of one of your domain controllers and the 'central' 'microsoft' 'com' with your organizational data. If you replace "user" with "group", it will list DL's, or you can remove that part entirely and get users, contacts and groups. You'll get a very pretty comma separated file you can pull into Excel. Anything that has a "TRUE" for the "Hide" field means it's hidden. CSVDE.EXE should be hiding somewhere on one of your Exchange servers. You can just copy it into your System32 directory.
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  • Maccaoz
    Finding Hidden Mailboxes Here's something that Nino Bilic from Microsoft recently came up with on the newsgroups. It's the sort of thing that I easily forget how to do! What's a quick way of finding all the hidden mailboxes that you may have on your system? Hidden mailboxes are identified by the fact that the attribute msExchHideFromAddressLists is set to a value of TRUE. All we have to do is perform a custom LDAP query against our AD to search for users with the above attribute set accordingly. This can easily be done with Active Directory Users & Computers: 1. Bring up Active Directory Users & Computers. 2. Right-click your domain name at the top, and choose Find. 3. In the Find combo box at the top, select Custom Search. 4. Click the Advanced tab. 5. Paste in the following LDAP query and then click Find Now. (&(objectclass=user)(msExchHideFromAddressLists=TRUE)) The list of hidden mailboxes will then be displayed. Don't forget that this will include System Mailboxes. Be sure to leave those alone!
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