finding object with ID no??? email address previously assigned and lost!

I'm creating a new user on my windows2000/exchange2000 server. The user is created but the email addresse ( is automaticly substituted by ( When I try to manually correct the address in the Exchange E-mail addresses tab, i get this error:

This e-mail address already exists in this organisation.
ID no: c10312e7
Microsoft Active Directory - Exchange Extension

I tryed to find where this e-mail address was previously assigned using advance search in the A.D. (user ou contact / email address) but no luck!!!!...

Is there some way to find it with the ID no (c10312e7) ????

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Try this:
Launch Outlook from your workstation.
Create a new message.
Enter the email address in the TO: field.
Hit CTRL-K to resolve the name.
Now right click on the resolved name and select properties.
This should give you the properties of the AD account the email address resolved to.

It may be a hidden account or the email address may have been added to a black hole Distribution group.

Hope this helps.
bobsensorAuthor Commented:
no luck!.... it just gives me the email address =

thank's anyway!
- Install the Windows 2000 Support tools
- Start, Run, LDP
- Inside LDP, click Connection Connect
- Servername should be a Global Catalog, Port 3268.  Click Ok.
- Click Connection, Bind.  Enter credentials or leave blank for pass through.
- Click view, tree.  Leave Base DN blank and hit ok.
- Right click on the domain listed to the left and click search
- Change the filter to read: (
- Change the scope to subtree, and hit run

The result will display on the right.  The result will be the AD object that currently has that email address assigned to it.


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Simplify Active Directory Administration

Administration of Active Directory does not have to be hard.  Too often what should be a simple task is made more difficult than it needs to be.The solution?  Hyena from SystemTools Software.  With ease-of-use as well as powerful importing and bulk updating capabilities.

bobsensorAuthor Commented:
hello marc, thank's for your answer

humm... I tried your example and it does not work...

I get:

Result 0 : (null)

I try it with 5 or 10 other existing addresses, but still nothing????

did I miss something???

bobsensorAuthor Commented:
I cannot connect to the dc that the exchange server is on using port 3268???...

I think that it is not global catalogue ready???....

I log on to an other dc correctly, but the search does not give me anything good

please help
the following script can be used to locate mail and/or proxyaddresses
hope this helps


Const myExchangeServer = "IP ADDRESS of AD"
Set oArgs=wscript.Arguments

FindMail myExchangeServer, oArgs(0)

Function FindMail (sSrv,sMail)
Set oConnection = CreateObject("ADODB.Connection")
Set oRecordset = CreateObject("ADODB.Recordset")
Set oCommand = CreateObject("ADODB.Command")

oConnection.Provider = "ADsDSOObject"  
oConnection.Open "ADs Provider"

oCommand.ActiveConnection = oConnection
wscript.echo "<GC://" & sSrv & ":389>;(|(proxyaddresses=smtp:" & sMail & ")(mail=" & sMail &"));cn;subtree"
oCommand.CommandText = "<GC://" & sSrv & ":389>;(|(proxyaddresses=smtp:" & sMail & ")(mail=" & sMail &"));cn;subtree"

Set oRecordset = oCommand.Execute

If oRecordSet.recordcount > 0 Then
      wscript.echo sMail & " Found"
      wscript.echo sMail & " Not in use"
End If

End Function

I tried both of the above suggestions out of curiousity on an Exchange 2003 server which is a global catalog server (sbs) and neither method returns any results in any cases. I've tried a number of things, such as searching for administrador, administrador@domain, somemailbox@domain and none return any results.

Curious, since this should work.

I also have the same problem - tried the same solutions above with the same failed results - anyone come up with a solution that works yet?

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.