False Positive email spam process should provide results

In reference to  --  Submitting legitimate emails flagged as spam   --   https://support.symantec.com/en_US/article.TECH233...  --.

We send the sample to CLOUDfeedback@feedback-87.brightmail.com

That process should provide the results to the submitter.

In several cases, via a support case, we learned that the sample "failed to process".
    ...we never did learn why it was not processed.

But even it the sample is processed,    we should be informed of the results--

    --spam filters changed   or    ---spam filters not changed     or   ---we cannot process the sample

Also would be useful to have some details.

This would enable us to coach the original email senders what they need to change to avoid being classified as spam.

Thanks

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