When an Automatic Lab Import has a failure with being unable to process due to a 'bad' file attachment to the email, it returns the error message "Email rejected due to invalid attachments."

It would be more useful for INX to debug for clients if the message had the invalid filenames listed at the end of the message.

This would enable INX to proactively determine if the file-type should be added to the allowed file types list without requiring the client to go and grab the email.