I tried to install POP3/SMTP protocols on our Exchange Server via the ADD SERVER ROLES under the SERVER MANAGEMENT interface. Ss soon as I did I began getting calls saying e-mails sent to us were being bounced back. I removed the POP3/SMTP protocols the same way I added them REMOVE SERVER ROLES under the SERVER MANAGEMENT interface. No luck.

I went to the Exchange System Manager -> SERVERS -> FIRST STORAGE GROUP and when I click it I get:

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The action could not be completed because the MicrosoftExchange Information Store service is unavailable. Be sure the service is running and you have connectivity to the Microsoft Exchange Server computer.

Operation: Retrieving mount information
ID no: c1041721

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I tried resatrting the server and I get many error messages in order:

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Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 5000
Date: 8/31/2006
Time: 3:51:21 PM
User: N/A
Computer: EYE1
Description:
Unable to initialize the Microsoft Exchange Information Store service. - Error 0x80040154.

For more information, click http://www.microsoft.com/contentredirect.asp.

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Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 9538
Date: 8/31/2006
Time: 3:51:21 PM
User: N/A
Computer: EYE1
Description:
Error 0x80040154 calling StrInitialize in REAPI.DLL.

For more information, click http://www.microsoft.com/contentredirect.asp.

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Event Type: Error
Event Source: MSExchangeMTA
Event Category: Directory Access
Event ID: 137
Date: 8/31/2006
Time: 3:51:20 PM
User: N/A
Computer: EYE1
Description:
A fatal directory error occurred. Change to the maximum logging level for more details. [MTA MAIN BASE 1 12] (16)

For more information, click http://www.microsoft.com/contentredirect.asp.

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Event Type: Error
Event Source: MSExchangeMTA
Event Category: Field Engineering
Event ID: 9405
Date: 8/31/2006
Time: 3:51:20 PM
User: N/A
Computer: EYE1
Description:
An unexpected error has occurred which may cause the MTA to terminate. Error: Init Routing API returned error -2147221164. [BASE MAIN BASE 1] (16)

For more information, click http://www.microsoft.com/contentredirect.asp.
</blockquote>

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I am VERY, VERY scared, can anyone offer any advice or tips into what I should do next?

Thanks.

Sounds like the store isn't mounting - first thing I would try is the MS knowledge base. I've had similar problems and almost always found the answer there.

On the one occaision the knowledge base didn't help, I had to restore from a backup. I hope you have backups!

http://www.microsoft.com/downloads/details.aspx?familyid=4BDC1D6B-DE34-4F1C-AEBA-FED1256CAF9A&displaylang=en

Run that, specifically the Exchange Database Recovery Management. Looks like your DB is screwed. It could just be inconsistent, so there may not be major damage. That tool should tell you EXACTLY what to do.

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