| Event Id | 9401 |
| Source | MSExchangeMTA |
| Description | A fatal MTA error has occurred. The file <file name> could not be opened for write operations. [<value> <value> <value>] (16) |
| Event Information | The file cannot be opened because you may not have full access permissions to work with this file, another application may be using the file, the file may be corrupted, or the file may no longer exist. Verify that the file is not in use by another application. You must have the appropriate permissions to perform this operation. |
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