Hi, I found something strange here, last week when I query my Exchange Server the resulting GC was DC01 but now when I query it change into DC02 ? can someone explains what happened to my Exchange server OriginatingServer value ? Thanks/* Server Support Specialist */

On Mon, 4 Apr 2011 01:07:43 +0000, Albert Widjaja wrote: >Hi, I found something strange here, last week when I query my Exchange Server the resulting GC was DC01 but now when I query it change into DC02 ? can someone explains what happened to my Exchange server OriginatingServer value ? Thanks Are both DC01 and DC02 in the same AD site? If so, why does it matter which DC is uses? --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Yes both of the DC are in the same domain and IP subnet, but for some unknown reason they changed by itself ?/* Server Support Specialist */

On Mon, 4 Apr 2011 03:45:04 +0000, Albert Widjaja wrote: >Yes both of the DC are in the same domain and IP subnet, but for some unknown reason they changed by itself ? Are you asking about the "configuration domain controller"? Perhaps the machine was rebooted or otherwise inaccessible for a while? If it's not the configuration DC then the DC used by Exchange will vary depending on the number of pending LDAP requests. Once they exceed a certain number (it used to be 20) the Exchange server will switch to another DC within the AD site. Where are you seeing the DC name? --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Filter your application logs for event ID 2080. After analyzing them all, you should be able to answer your own question. John

The “OriginatingServer” property indicates which DC the data is read from and is used primarily for troubleshooting. It is updated with each AD call so that it could change during different runs of “get-*” cmdlets James Luo TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.