Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Error MSExchangeTransport event ID 3020

Posted on 2007-11-20
4
Medium Priority
?
1,517 Views
Last Modified: 2009-07-24
Now I'm facing this error in Exchange. Any help would be very appriciate
Source: MSExchangeTransport
Category: NDR
Event ID 3020
 
 
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

Open in new window

0
Comment
Question by:icic-dcic
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 23

Expert Comment

by:debuggerau
ID: 20325580
Do you know where to look in Active Directory to check email addresses?
Did you get another error in the event log to point out the offending entry?

0
 

Author Comment

by:icic-dcic
ID: 20326083
I know where to look in Active Directory to check email address. that is Properties account and see it in General tab. Is it right? And I just get that error. and sometime i get event error 1023 POP3SVC

Source: POP3SVC
Category: Content Engine
Event ID: 1023
Error 0x7d6 occurred while rendering message 0001-000000086a54 for download for user minhduc.le@icic.vn. 
 
For more information, click http://www.microsoft.com/contentredirect.asp. 

Open in new window

0
 
LVL 23

Accepted Solution

by:
debuggerau earned 2000 total points
ID: 20332384
I'd doubt these errors are related, however the POP3SVC might be from Virus protection or connections dropping, shouldn't happed often though.

OK, assuming you have a AD integrated exchange server, the email addresses are in
Active Directory Users and Computers -> Users -> Select User
Select the tab marked 'E-mail Addresses' and they will be listed below.

To check the contacts, just select a contact rather than a user above...

Now, the server is complaining that an email is used twice in a forest, but in a different container.
Without seeing your AD setup, I cant know how complex it will be to find, you may need some tools or scripts to report on the email addresses used.

Checkout scriptomatic at the scripting center, they have some CDO scripts that will report email addresses.

Hope that helped.
Regards
Greg

0

Featured Post

NFR key for Veeam Agent for Linux

Veeam is happy to provide a free NFR license for one year.  It allows for the non‑production use and valid for five workstations and two servers. Veeam Agent for Linux is a simple backup tool for your Linux installations, both on‑premises and in the public cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

There are times when we need to generate a report on the inbox rules, where users have set up forwarding externally in their mailbox. In this article, I will be sharing a script I wrote to generate the report in CSV format.
The core idea of this article is to make you acquainted with the best way in which you can export Exchange mailbox to PST format.
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question