How to Manage AD LDS on an Edge Transport Server with ADSIEdit

The Exchange Server 2010 Edge Transport server role uses an instance of Active Directory Lightweight Directory Services (AD LDS) to store information about recipients and server configurations.

In some situations you may wish to connect to the AD LDS instance with ADSEdit.msc to view or make changes to data.

First you need to determine the port that the Exchange instance of AD LDS is running on.  On the Edge Transport server open a command prompt and use the dbdsutil command to list the AD LDS instances.

dsdbutil: list instances

Instance Name:         MSExchange
Long Name:             MSExchange
LDAP Port:             50389
SSL Port:              50636
Install folder:        C:\Windows\
Database file:         C:\Program Files\Microsoft\Exchange Server\V14\TransportRoles\Data\Adam\adamntds.dit
Log folder:            C:\Program Files\Microsoft\Exchange Server\V14\TransportRoles\Data\Adam
Service state:         Running

Next, launch ADSIEdit.msc, and open a new connection.

Set the naming context to Configuration and type in the server name (or localhost) followed by the port your AD LDS instance is running on.

Click OK to connect and you are now connected to the AD LDS instance being used by the Edge Transport server, and can view or modify the AD LDS data as necessary.

About Paul Cunningham

Paul is a Microsoft Exchange Server MVP and publisher of Exchange Server Pro. He also holds several Microsoft certifications including for Exchange Server 2007, 2010 and 2013. Find Paul on Twitter, LinkedIn or Google+, or get in touch for consulting/support engagements.


  1. Hello,

    Thank you, this article is very helpful.
    Do you know where the recipients’ adresses are stored precisely? I cannot find them. Could they be stored in another naming context?

    Thank you

  2. Hi Paul,

    In our exchange 2010 environment, we have 3 nodes under the database DAG. There is a mail box which was created in one node as active copy and the 2 passive copies were created in a single node. Below is the status output of the mailbox
    [PS] C:\Windows\system32>Get-MailboxDatabaseCopyStatus -Identity H-MBX-9A

    Name Status CopyQueue ReplayQueue LastInspectedLogTime ContentIndex
    Length Length State
    —- —— ——— ———– ——————– ————
    H-MBX-9A\DRTVSMHNT25 Suspended 213098 0 Failed
    H-MBX-9A\DRTVSMHNT25… Suspended 213098 0 Failed
    H-MBX-9A\TNHSRMBXN1 Dismounted 0 0 Healthy

    But the edb file in the DRTVSMHNT25 was deleted by mistake, now if we try to remove / reseed the mailbox from DRTVSMHNT25 or from TNHSRMBXN1 where the active copy was counted we are getting below error.
    The operation couldn’t be performed because ‘H-MBX-9A\drtvsmhnt25′ matches multiple entries.
    + CategoryInfo : NotSpecified: (0:Int32) [Update-MailboxDatabaseCopy], ManagementObjectAmbiguousException
    + FullyQualifiedErrorId : 2717A9BF,Microsoft.Exchange.Management.SystemConfigurationTasks.UpdateDatabaseCopy

    we had seen your article to remove it using ADSIEDIT. If we remove it using ADSIEDIT in DRTVSMHNT25 Domain Controller, will it reflect in the Domain Controller of TNHSRMBXN1 where the healthy copy was located?
    If we delete will it give any issue for the exising database?

    There are no users under that mailbox and we want to delete it.

    R Sethunarayanan.

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