Hi @MichaelB689 w e apologize for the inconvenience and will certainly take your suggestions and reevaluate our code. The current way our system is set up at this point is to interpret the bounce code we receive from the receiving email service providers as best we can and make the best decision possible based on the data our systems have gathered. We understand that given there is no universal bounce code for a non-existent bounce there can be some false positives. However, we are certainly willing to assist in any way possible. If you have any questions, please do not hesitate to reach out to our Deliverability Specialists directly as they can assist further.
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