My exchange 2007 lost the DC, and users stay without mail. Help me!

Posted on 2007-11-26
Last Modified: 2010-03-06

Today when I arrived, my exchange 2007 was crazy. It not found the DC's in the LAN, and unfortunately all users stay without mail.
When I look the DNS server, I found another server out of my net, just with trust relation, but this server is in the same domain, but different site.
In exchange log, show AD TOPOLOGY error. Please, help me coz everybody stay without mail in company.


Question by:marcoacorreia
  • 2
  • 2
LVL 104

Expert Comment

ID: 20352314
Presuming that your domain controllers are still available and can be seen by the Exchange server, have you rebooted the machine?


Author Comment

ID: 20352336
Hi Sembee,

I can ping all machines in the net, DC or member servers, from exchange or not, BUT, the exchange can't find the global catalog.
In my net, I've 2 DC's and both are GC, but the exchange can't find anyone.

I tried boot both dc, exchange server, but the error is the same.
LVL 104

Accepted Solution

Sembee earned 500 total points
ID: 20352666
Ping means nothing other than name resolution.
It doesn't prove connectivity in any way.

Check whether the server can actually do nslookups etc on the domain controllers. Ensure that all of the Exchange services are running and have not stopped or failed.

Anything connectivity wise mentioned in the event viewer?


Author Comment

ID: 20356811
BINGO!! My problem was the dcgpofix.exe application. After the application my exchange down and cán´t find the DC.
thanks Simon for help.

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Utilizing an array to gracefully append to a list of EmailAddresses
This article lists the top 5 free OST to PST Converter Tools. These tools save a lot of time for users when they want to convert OST to PST after their exchange server is no longer available or some other critical issue with exchange server or impor…
To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…
This video discusses moving either the default database or any database to a new volume.

777 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