Hello Performanceautogroup, Sorry for the problem with the email server blacklisted. There are many reasons why email servers are blacklisted. We have a thorough explanation on the topic here. The quickest way to get your server de-listed is to provide an example of a bounce back email with the error codes to our live technical support department in a verified support ticket. If you have any further questions or comments, please let us know. Regards, Arnel C.