How can i find which Domain controller is being used by Exchange.?


How can i find which Domain controller is being used by Exchange.?
I have an Exchange 2007 server and 2 Dc's. How can i find which DC is being used.
Will Outlook use a DC to authenticate.
Now the 2 Dc's are Off. Outlook goes on asking for password. is this because the dc's are off?

LVL 11
Who is Participating?
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.

Alan HardistyCo-OwnerCommented:
Please refer to tip 1 from this page:
try nslookup from command prompt
Mahmoud SabrySenior IT Systems EngineerCommented:
to know the Dc that exchange server use, in EMC go to Server configuration, select any server of ur servers, right click, properties, go to system settings to see current domain controllers and Global catalog servers that are used by exchange server

without Domain controller, exchange server at all will not work properly not only outlook, you must keep at least one DC running
10 Tips to Protect Your Business from Ransomware

Did you know that ransomware is the most widespread, destructive malware in the world today? It accounts for 39% of all security breaches, with ransomware gangsters projected to make $11.5B in profits from online extortion by 2019.

To see exactly which one it is currently talking to have a look at this article:
hmmm, the article I posted above is for working out which DC ESM is talking to, not Exchange.

You can however use similar methods to find out which DC/GCs Exchange is talking to:
1.) find the PID of MAD.exe (Exchange System Attendant)
2.) netstat -ano | findstr "<PID>" >>MAD.txt
3.) findstr /i ":389 :3268" mad.txt >>DCGC.txt
4.) findstr /i "ESTABLISHED" DCGC.txt

the above will show all the DC(port 389) & GCs(port 3268) your MAD.exe (Exchange System Attendant) has an open connection with.

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
Khurram Ullah KhanCommented:
It is very simple, go to event viewer and see the last occurance of Event ID 2150. it will show you exchange is currently using which DC and GC.
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.