Have you considered that its not the bouncing but rather the mail server its self is bouncing them. MS outlook for example will use junk mail and seeing a high number of email addresses comming from one domain, the server its self might be blocking the emails rather then the spam server just moving on?
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Have you considered that its not the bouncing but rather the mail server its self is bouncing them. MS outlook for example will use junk mail and seeing a high number of email addresses comming from one domain, the server its self might be blocking the emails rather then the spam server just moving on?