Bem, você poderia usar esse curto circuito:
whitelist_to [email protected]
If the given address appears as a recipient
in the message headers (Resent-To, To, Cc, obvious envelope recipient,
etc.) the mail will be whitelisted. Useful if you're deploying
SpamAssassin system-wide, and don't want some users to have their mail
filtered. Same format as whitelist_from. There are three levels of
To-whitelisting, whitelist_to, more_spam_to and all_spam_to. Users in
the first level may still get some spammish mails blocked, but users
in all_spam_to should never get mail blocked.The headers checked for whitelist addresses are as follows: if
Resent-To or Resent-Cc are set, use those; otherwise check all
addresses taken from the following set of headers:To Cc Apparently-To Delivered-To Envelope-Recipients Apparently-Resent-To X-Envelope-To Envelope-To X-Delivered-To X-Original-To X-Rcpt-To X-Real-To