Exchange Server Events-Appl- error 9175

A large number of errors slow the server and also the mail send/receive process.

A similar question was on the KB but I have difficulty applying those suggested solutions.
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Check this KB

Is your information Store service runnning?

In exchange system manager is the information store mounted?
CityOfPalmsAuthor Commented:
Yes my information Store service runnning.
Yes In exchange system manager the information store is mounted.

Additional information:
In Feb, I created a new Information store and dropped the old one since the Old one had grown to over 150 GB in size. The current one is a little over 20 GB.

One of the Mailboxes has  a red circle in front of it; Did I delete any file associated with this by accident? Also, how do I find which one is my System mailbox?

One mail user is getting an error every time she clicks on the button Send/receive in her Outlook. Error attached.

Another user is getting 'delay' notices from system admin.

Somehow, I think all these symptoms relate to a common problem.
how did creating a new information store solve the space problem?

do you backup this information store?
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CityOfPalmsAuthor Commented:
The size of the MDBDATA file was disproportionately high (150+ GB) compared to the total of the individual mailbox sizes. After creating the new mailbox store, that problem went away.

I do backup the Information Store using Symantec Backup-Exec software on to Tapes.
maybe your backup software was not clearing the transaction logs correctly.

or running eseutil to compact the database may have solved it.

did you move the mailboxes using system manager?
CityOfPalmsAuthor Commented:
I created a new store, and one by one I right-clicked the mouse on each Mailbox and using the Exchange task Wizard moved the mail boxes to the new store.

There is one mailbox with a red mark to the left of it. Picture attached. Do I have to delete this?
Also attached is a list of MS Exchange System Objects under Active Directory.
I don't have a user names 'SystemMailbox' under the list of users in my Active Directory; Do I have to create one?
CityOfPalmsAuthor Commented:
I tried to use eseutil to compact the database. But it took a long time and aborted. One expert in this Exchange said creating a new store and dropping the old one is much simpler and efficient.
i suspect that the disconnected system mailbox is because the user account is missing.

the preferred method for re-creating it would be to create a new mailbox store and move the mailboxes to it.;EN-US;Q316622 

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CityOfPalmsAuthor Commented:
I have implemented all the suggestions.
I will redo the creation of another Mail Store and move all the mailboxes
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