| Event Id | 2015 |
| Source | MSExchangeIS |
| Description | <number> messages are waiting to be transferred out to the Microsoft Exchange MTA (sent) from gateway <name>. |
| Event Information | According to Microsoft: EXPLANATION: This is an informational event message that provides a notification about the number of messages and routing of the mail. USER ACTION: No user action is required. |
| Reference Links | Exchange (MSExchangeIS) |
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