If the IP address is in the MAPS RBL it may be a multi-hop (multiple IP) open relay, a spam source, or a spam support service (e.g., a webserver or nameserver). Only administrators responsible for the listed netblock will have the authority to fix the problem. ISPs should contact MAPS directly; removals from the MAPS RBL only happen after contact with the listed network administrator.

In other words, if you are not the administrator of the IP address(es) in any of our lists, then you should contact your ISP in order to resolve the problem. MAPS cannot resolve issues regarding any of our lists with end-users or others who are not directly responsible for the particular network on our list. Instead, contact your ISP.

When you contact your ISP, they will need a copy of the bounce message that you received or other evidence of the problem. Be sure to include the IP address that was rejected. Let them know which list it is on, the URL of that list, and the URL of the lookup form. Finally, let the system administrator know how to contact us. We are always pleased to speak to a system administrator about resolving a listing. Listings are removed within minutes once the removal is requested and the problem is fixed.