RE: weird user creation - mailboxes[Scanned]

  • From: "Dolly Bareqet" <Dolly.Bareqet@xxxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 6 Jul 2005 15:43:31 +0200

Verify that you do not have a user on the other OU with the same e-mail address.





From: simon whale [mailto:simon@xxxxxxxxxxxxxx] 
Sent: Wednesday, July 06, 2005 1:07 PM
To: [ExchangeList]
Subject: [exchangelist] weird user creation - mailboxes[Scanned]

Morning all

I have a strange one.

I created two users (callblockerone, callblockertwo) in there own 
organizational unit (callblocker, as that is the domain that they are 
associated with) with email accounts in a separate storage group two as these 
are separate from the normal company day to day workings.  The logon account 
created ok, the second account has email addresses, including the x400 address 
assigned to it but no mail box.

When a user send a mail to the second account, I get the follow NDR

From: System Administrator
Sent: 06 July 2005 10:27
To: callblockertwo
Subject: Undeliverable:Delivery Status Notification (Failure)

Your message did not reach some or all of the intended recipients.


The following recipient(s) could not be reached:

      callblockertwo on 06/07/2005 10:27

            A configuration error in the e-mail system caused the message to 
bounce between two servers or to be forwarded between two recipients.  Contact 
your administrator.

            <jupiter.ukdata.local #5.4.6>

I also get the following in the event logs

Event Type:     Error

Event Source:   MSExchangeTransport

Event Category: NDR 

Event ID:       3020

Date:           06/07/2005

Time:           10:27:10

User:           N/A

Computer:       JUPITER


A non-delivery report with a status code of 5.4.6 was generated for recipient 
(Message-ID <22ED2875F95FCC439CB5399211D1F7F04193C4@xxxxxxxxxxxxxxxxxxxx>).   

Cause: A forward loop was detected by the categorizer. This is a common hosting 
configuration problem caused when someone uses the provisioning tool to create 
a contact in one organization unit and creates a user in a different 
organization user that share the same e-mail address.    

Solution: Verify that you do not have a user in organizational unit and a 
contact in a different organizational unit that have the same e-mail address. 

For more information, see Help and Support Center at


0000: 46 05 04 80               F..â  

I have checked all users to ensure that they also donât have the 
callblockertwo email address. And they donât.  I have checked on the 
Microsoft support site and site and they only thing they refer to 
is public folder replications

Anybody able to give me an idea to solving this?  setup is Windows 2003, 
Exhange 2003 SP1 + plus all windows and exchange hotfixes too



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