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Microsoft Exchange Transport service is rejecting message submissions - What happens to inbound messages?

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Last Modified: 2012-05-10
Over the New Years Holiday, at 4am my server "The Microsoft Exchange Transport service is rejecting message submissions because the available disk space has dropped below the configured threshold." I have freed up space and restarted my Microsoft Exchange Transport service. Now new emails are arriving and routing properly. But what happened to all the messages that were sent during the "Rejecting" window?

I sent a few test messages last night and did not get any bounce or undeliverable. The issue has been noticed by a few users and I know the first question they are going to ask is where is my email.

The system is a Windows 2008 Small Business Server - Standard.

FULL MESSAGE BELOW:


Resource pressure increased from Normal to Medium.

Resource utilization of the following resources exceed the normal level:
Queue database logging disk space ("C:\Program Files\Microsoft\Exchange Server\TransportRoles\data\Queue\") = 97% [Medium] [Normal=95% Medium=97% High=99%]
Physical memory load = 94% [limit is 94% before message dehydration occurs.]

Back pressure caused the following components to be disabled:
Inbound mail submission from the Internet
Mail submission from the Pickup directory
Mail submission from the Replay directory

The following resources are in the normal state:
Queue database and disk space ("C:\Program Files\Microsoft\Exchange Server\TransportRoles\data\Queue\mail.que") = 96% [Normal] [Normal=95% Medium=97% High=99%]
Version buckets = 0 [Normal] [Normal=80 Medium=120 High=200]
Private bytes = 3% [Normal] [Normal=71% Medium=73% High=75%]

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