I recently upgraded exchange 2000 to exchange 2003 on alternate hardware. The OS is Windows Server 2003 SP1 and I have Exchange 2003 SP1 installed. I get some event log errors that I can't seem to find much help with related to Exchange 2003. Intermittently clients are unable to attach to the server until the Exchange services are stopped and restarted. The most common event log errors are as follows:
Source: MSExchangeDSAccess - Event ID: 2114 - Process MAD.EXE (PID=2792). Topology Discovery failed, error 0xffffffff
Source: MSExchangeAL - Event ID: 8026 - LDAP Bind was unsuccessful on directory "server.Domain.com" for distinguished name ''. Directory returned error:[0x51] Server Down. DC=Domain,DC=com
Source: MSExchangeDSAccess - Event ID: 2103 - Process MAD.EXE (PID=19572). All Global Catalog Servers in use are not responding:
Source: MSExchangeDSAccess - Event ID: 2102 - Process MAD.EXE (PID=19572). All Domain Controller Servers in use are not responding:
Source: MSExchangeSA - Event ID: 9154 - DSACCESS returned an error '0x80004005' on DS notification. Microsoft Exchange System Attendant will re-set DS notification later.
Any insight to what might be causing these errors and the client disconnects would be appreciated.