The MSMQ MAPI Transport Provider uses the Application Event Log to record informational messages and error messages. When logging messages, it inserts the name MSMQMAPI in the source column of the event viewer.
For example, when Microsoft Exchange starts the MAPI Transport Provider, it performs a basic initialization, logging the following informational messages in the event viewer.
| If Initialization... | Then message reads... |
|---|---|
| Succeeds | "Transport provider logon succeeded" |
| Fails | "Transport provider logon failed" |
Error entries that are logged by the MAPI Transport Provider include a details section that provides a stack trace of error descriptions. Save this information for a reference when troubleshooting problems.