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mails missing after database dismounted

Our Server's C: drive ran out of space and because of that the  First Storage Group got Dismounted. After mounting the database we didn't receive any emails that was supposedly sent during the time the database was dismounted. Where and how can we get this emails back; are they queued some place.?Attached is a screen shot of when we run message tracking.
exchange-emails.PNG
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xpandit
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xpandit
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sunnyc7Commented:
Go here
www.mxtoolbox.com

Enter your domain-name.
Check the TTL field there. Emails destined for your domain will be retried till the TTL field (if it's 60 mins, then the sending mail-server will try sending for 60 mins) -
After that it will generate a NDR and send that message to the sender.

To avoid situations like this:
a) Sign-up for a backup MX service like www.mxsave.com
they will catch your mails when your primary goes down, and will store-forward till 14 days.
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xpanditAuthor Commented:
Thank you sunnyc7

I thought the TTL value on an MX record was how frequently DNS should check for a change in MX records.

Also, if you look at the screenshot above, Exchange received the mail message. (It was just the store that was down.) As soon as the store was back up, Exchange did try an deliver the mail. It failed though.

ARe you sure this is the reason?
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sunnyc7Commented:
Are you saying that Exchange Received msgs when the store was down ?
I am not sure what those alerts are in message tracking.

You can try it for yourself, by dismounting the store on a weekend and then try sending emails. Most mail-servers will NDR immediately. (PS: I hope you have your pet exchange server to play with... don't do this on production servers :) )
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