Issue
Windows Application Log displays the following error message: "Event ID: 1057 - Agent 'ESET Filtering AV Agent' went async but did not call Resume on the new thread, while handling event 'OnSubmittedMessage'."
Details
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This event message is triggered due to Microsoft Exchange API and backward compatibility with earlier versions of the .NET Framework.
Solution
It is safe to ignore an "Event ID: 1057" error message. This error message does not have any effect on ESET Mail Security for Microsoft Exchange Server or its protection status.