Event ID - 205

Event Id205
DescriptionAn interoperability problem occurred with message <message id>. A 1988-conformant P1 message was found to contain 1984-conformant internal trace information. A non-delivery report has been generated with reason code <error code> and diagnostic code <error code>. Contact Microsoft Technical Support. [<value> <value> <value> <value>] (14)
Event InformationAccording To Microsoft:

The diagnostics logging levels of the message transfer agent (MTA) interface and interoperability categories should be increased to create interoperability logs. These logs are text logs that consist of the binary contents of communication among MTAs in different sites and between MTA and client applications within a site. They are stored in the \Exchsrvr\Mtadata directory. The current log is always named Bf0.log. Prior logs are named Bfx.log, where x increases as the age of the log increases.

In the Server Properties dialog box, on the Diagnostics Logging tab, create an interoperability log by selecting MSExchangeMTA and setting the logging levels of both the Interoperability and Interface categories to Medium or greater.
Reference LinksMicrosoft product: Exchange Version: 6.5.6940.0 Event Source: MSExchangeMTA Event ID: 205

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