How often are servers retested?
• Open SMTP relays are expired and retested after 90 days. If you have used our removal form to request removal of an open relay, the open relay IP will be retested several hours after it has been removed. The delay between a removal request and the IP actually being removed varies. Until the penalty delay from too many removals kicks in, removal requests through our removal form are generally processed in about an hour or less. Occasionally, maintenance on our back-end scripts may delay removals for some time. You can check the queue of removal requests on our stats page.