The email policies of each service provider (such as aol, comcast, cox, etc) are up to them to determine. At this point our email delivery provider is working with each of these providers to encourage them to accept our email. But the process is slow and different for each provider. We have very little control over how these providers views email from this domain and we have taken the steps we can to improve the situation. The rest is up to aol, comcast and cox.
If you are wondering why this situation occurred, when we moved this forum to a new data center we essentially changed our identity to the outside world. It will take some time for the rest of the internet to associate our new location with us.
If you want to be of help in this struggle, you might try contacting you email provider and let them know that email you consider important is being blocked by them and that will probably have greater impact since you are a customer of these providers.