It's possible to manage sender and domain whitelists.
CVE:
CVE-2007-0617 (The SpamBlocker.dll ActiveX control in Earthlink TotalAccess is marked "safe for scripting," which allows remote attackers to add arbitrary e-mail addresses and domains to the spam blocker whitelist via the (1) AddSenderToWhitelist and (2) AddDomainToWhitelist functions.)
