Who do I send a complaint to on practices of a blacklisting service?
Since each blacklisting service has its own procedures for adding and removing IP’s, all complaints should be sent to the blacklisting service and/or the domain that is blocking your mail. Please visit the blacklisting services’ website for more information. You may also want to complain to the owner of the domain that is subscribing to the blacklisting service to let them know that the blacklist practices are generating complaints from their users. You should be able to find the mail administrator of any domain by visiting the domain’s website or doing a WHOIS query with their registrar.