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After you install Microsoft Windows Small Business Server 2003, the following event is logged in the event log of Event Viewer:
EventCode=8026 Source=MSExchangeAL Type=Error LogFile=Application LastBuild=2436 #Times=1 Scenario=Clean Installation LastComputer= Computer_Name Message=LDAP Bind was unsuccessful on directory Directory for distinguished name ''. Directory returned error:[0x34] Unavailable. For more information, click http://search.support.microsoft.com/search/?adv=1.
This problem occurs when the Microsoft Exchange Server 2003 component of Small Business Server 2003 is installed. Event 8026 is generated every time that the computer shuts down or starts. This event occurs because of differences in the timing between services as they stop and start. You can ignore this event if it occurs during computer shutdown and startup.