Event ID 9175 and 455 -I can't mount my Mailbox Store in my First

Here is something I'm seeing a lot in my event viewer:

Product: Exchange
Event ID: 9175
Source: MSExchangeSA
Version: 6.5.0000.0
Message: The MAPI call 'value' failed with the following error: error code


That even ID 9175 is all over my event viewer - probably about 20 instances
of it right after I reboot the comput. I think I've narrowed down the
problem to - I can't mount my Mailbox Store in my First Storage Group for
Exchange.

I also get this in my event viewer:

Product: Exchange
Event ID: 455
Source: ESE
Version: 6.5.0000.0
Message: process name (process id) file nameError %5 occurred while opening
logfile error code.


I think both of these events - at least the problem that reports these event
ID's has caused my exchange server to just die (well, more precisly, nobody
in my company can send/get email).

A lot of what I've read so far says to make sure store.exe is running as a
service (it is). Check permissions on certain folders (permissions are all
good) - but right now, my exchange box is just dead w/nobody being able to
connect via outlook or send/get email. Yesterday it was working great -
today, just walked in to work and poof - stops working. Nobody has played
w/the exchange box - I'm the only person in the company with access to it.

I figured there was a problem when outlook 2003 was reporting: Task
Microsoft Exchange Server reported error (0x8004011D)


Does anyone know what's going on?? Thanks in advance all.


I also read this page and all the links - but nothing helped:
http://support.microsoft.com/search...uct=OFF2003&LN=EN-US&SD=OFFN&Query=0x8004011D


Thanks.

 

Have you seen this one?

The Exchange database store may not mount in Exchange Server 2003 or in
Exchange 2000 Server, and event IDs 9175, 486, 455, 413, and 5 may be logged
http://support.microsoft.com/default.aspx?scid=kb;en-us;896143