What is the requirement for Dedicated IP Address(es)?
Currently, in order to become sender certified, you must send your email from a dedicated (i.e., unshared) IP address or set of IP addresses. Your organization may control this itself, or another organization may already provide it for you. If you are not sure if you have a dedicated IP address, please contact your Email Service Provider (ESP) or Internet Service Provider (ISP). Shared IP addresses cannot be certified because they are used by multiple different entities. Since the program standards include things like disclosure and proper list hygiene that will vary from sender to sender, we cannot certify that IP based on one sender alone.
