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MSExchangeDSAccess Event ID 2103

Rizzen1 asked
Medium Priority
Last Modified: 2013-06-04
My exchange server 2003 installation has been a bit quirky.  I seem to get this error alot.  Exchange 2003 is installed on a member server.  I also have a Primary domain controller (PDC1) and a seperate backup domain controller (BDC1).  This error states that "All Global Catlog servers in use are not responding" PDC1@Domain.local in reference to MAD.exe

However some successful App Log entries for MSExchangeDSAccess report that "DSAcces will user servers from the follwing list: BDC1@domain.local Cofiguration Domain controller is set to: BDC1@domain.local. in reference to inetinfo.exe

Should it be refrencing my Backup domain controller at all?  Also I continue to get the error entry every 20mins referencing the same Mad.exe program.  What have I done wrong here. It seems to be causing Outlook some issues.  When users open outlook they get the "requesting information" message for a longtime before outlook opens.  Then sometimes it opens really quickly.

Note: All installation steps (/forestprep and /domainprep) were done on the Exchange member server.

Thanks in advance

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Expert of the Year 2007
Expert of the Year 2006

Exchange will use all the domain controllers that it finds - plus it will use the first one that responds.

The main reason for the the error that you are receiving is DNS configuration errors. Ensure that you only have domain controllers listed in the DNS configuration of all servers.



All of my servers are configured to point to the PDC for DNS
Expert of the Year 2007
Expert of the Year 2006

Just that domain controller? (remember that there are no PDC and BDC in active directory - all domain controllers are equal with just some holding roles).
Is that machine a global catalog? Do you have any other global catalog domain controllers? You should ideally have two as the GC/DCs handle logins.

Any replication errors in the event logs of the domain controllers?



Sometimes it works well somtimes it doesnt, I am begining to think it is a problem with my switch.  When I ping the server i occasionally get no reply, then othertimes I do.
Expert of the Year 2007
Expert of the Year 2006

It may not be the switch, could be the NIC or the network cable. If you are getting intermittent traffic then you need to investigate. Exchange needs almost constant access to the domain controller.



Well I have finally fixed the problem.  My servers have two NIC cards each.  They are Broadcom NetXtreme's.  It appears these network cards dont work very well if theres more than one in the same box (at least with Windows).  The packets would get confused as to wich NIC they were to go in and out from. Simply unplugging one network card from each box solved the problem.  Just to make sure I dont have any more problems I also set the BDC to host the Global catalog as well.
PAQed with points refunded (500)

EE Admin

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