Did you enable click tracking in your sendgrid configuration? If so, that is probably what is causing your forum URLs to be re-written as sendgrid.net URLs. Try with the tracking disabled and see if that helps improve your score.
Did you enable click tracking in your sendgrid configuration? If so, that is probably what is causing your forum URLs to be re-written as sendgrid.net URLs. Try with the tracking disabled and see if that helps improve your score.