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

Make managing Office 365 email signatures a breeze

Are you using Office 365? Having trouble trying to set up email signatures for your users? Getting stressed out managing multiple signatures? Need an easier way to manage? We have a solution for you, try the most-user friendly and powerful signature management tool on the market.

Question has a verified solution.

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

Not sure what the best email signature size is? Are you worried about email signature image size? Follow this best practice guide.
Follow this checklist to learn more about the 15 things you should never include in an email signature from personal quotes, animated gifs and out-of-date marketing content.
In this video we show how to create a Shared Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Sha…
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…

867 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

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now