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
357 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 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

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

This article explains how to install and use the NTBackup utility that comes with Windows Server.
Unified and professional email signatures help maintain a consistent company brand image to the outside world. This article shows how to create an email signature in Exchange Server 2010 using a transport rule and how to overcome native limitations …
In this video we show how to create a Contact 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 >> Contact ta…
how to add IIS SMTP to handle application/Scanner relays into office 365.

734 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