Solved

LDAP Bind error(8026), that is shutting down Exchange at random times for about 20 min. a day.

Posted on 2008-10-24
3
347 Views
Last Modified: 2013-12-24
I've inherited an Exchange server that is shutting down at random times during the day.  The event log shows a MSExchangeAL error, Event ID: 8026.  "LDAP Bind was unsuccessful on directory w2003srvr1.local.wavetec.net for distiguished name ". Directory returned error:[0x51] Server Down.  (This error toggles between both DCs w2003srvr1 and w2003srvr2)
This error happens about 10 times a SECOND, for between 10 to 30 minutes and then it spontaneously resolves itself.  While this is happening, I can still ping the mail server; I can still ping the DC's from the mail server.
I have checked the RUS and FSMO roles.  All looks correct, but I can elaborate if necessary.
Exchg-LDAP-errors.pdf
0
Comment
Question by:GregShires
  • 2
3 Comments
 
LVL 14

Expert Comment

by:dfxdeimos
ID: 22798815
Have you tried the steps listed in the 'Resolution' section here:

http://support.microsoft.com/kb/272552/en-us
0
 

Author Comment

by:GregShires
ID: 22798897
Yes.  The RUS is pointing to w2003srvr2, which is the DC/GC.  That's not the issue.
0
 

Accepted Solution

by:
GregShires earned 0 total points
ID: 22852887
After speaking with Microsoft, there were two errors found in the Server Setup.  Both the DC and the Mail server had external DNS servers hard coded into the TCP/IP settings.  They are also in the FORWARDERS of the DNS server.  The main issue was the MAIL server had 2 NICs and the second one that wasn't being used was ahead of the 1st NIC in the Binding order under Network Neighborhood/Advanced Settings.  I moved the 1st NIC up in the order and I haven't had an LDAP error in 2 days.
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

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

This article explains in simple steps how to renew expiring Exchange Server Internal Transport Certificate.
Find out what you should include to make the best professional email signature for your organization.
In this video we show how to create a Distribution Group 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 >>…
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…

919 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

14 Experts available now in Live!

Get 1:1 Help Now