Event ID's 1022, 3001, 1164 on Exchange 2003

I have an Exchange 2003 server that is getting numerous event id 1022 errors, the code of the error is 1100. I have not been able to find the reason for this code on MS technet. I am also getting errors 1164 and 3001. What is causing this and how can I resolve it?  Thanks.
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Dave StringfellowIT managerCommented:
could you please paste the full error of the event?
valiconAuthor Commented:
Event ID 1022: Logon Failure on database "Storage Group\Mailbox Store1" - Windows 2000 account NT AUTHORITY\SYSTEM: mailbox /o=First Organization/ou=First Administrative Group/cn=Recipients/cn=jdoe Error:1100

Event ID 1164: No database session was available to satisfy a request on database "Storage Group\Mailbox Store1". The number of sessions configured via the active directory attribute msExchESEPParamMaxSessions on the storage group may be set too low for the level of activity on this storage group. The current value of the parameter is 209.

valiconAuthor Commented:
Issue solved via service pack installation.

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