When you try to start the Microsoft SA we get the error:
---------------------------
Services
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The Microsoft Exchange System Attendant service on Local Computer started and then
stopped. Some services stop automatically if they have no work to do, for example,
the Performance Logs and Alerts service.
---------------------------
OK
---------------------------

Although RPC service is started.
Also DNS server had a RED X on it.
Check the event viewer:

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7001
Date: 8/14/2007
Time: 2:04:33 PM
User: N/A
Computer: SERVER NAME
Description:
The Microsoft Exchange Information Store service depends on the Microsoft Exchange
System Attendant service which failed to start because of the following error:
The operation completed successfully.

Event Type: Error
Event Source: MSExchangeSA
Event Category: General
Event ID: 9152
Date: 8/14/2007
Time: 2:20:22 PM
User: N/A
Computer: SERVER NAME
Description:
Microsoft Exchange System Attendant reported an error '0xc1034a70' in its DS
Monitoring thread.

Event Type: Error
Event Source: MSExchangeSA
Event Category: General
Event ID: 1005
Date: 8/14/2007
Time: 2:20:19 PM
User: N/A
Computer: SERVER NAME
Description:
Unexpected error There are no more endpoints available from the endpoint mapper.
Facility: Win32 ID no: c00706d9 Microsoft Exchange System Attendant occurred.


RESOLUTION:
==========

This problem may occur if the Microsoft Distributed Transaction Coordinator (MSDTC) has been configured to use a certain range of ports for incoming requests, but the range that has been specified is not large enough.

Go into regedit and delet the following registry key (make sure you backup the regitry before making any changes):
HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\Internet
Reboot the server.
The checked the DNS console. It should no longer have a red'x' in it
Also all the Exchange services would start.

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