Hi I have the same configuration and situation as the following: http://serverfault.com/questions/132750/postfix-whitelist-before-recipient-restrictions
In short: " So i need a method of whitelisting ANY email that comes to domain.com, however i need it to take place before any of the recipient restrictions, they want no RBL or postgrey blocking at all. " but the accepted answer has two contradictions: first he suggest to use "check_sender_access" but in the example he uses "check_client_access", then he uses "smtpd_recipient_restrictions" but in the comments someone points out why not to use "smtpd_sender_restrictions" .. Can you please clarify which is the best method ? Thanks for your attention, regards and have a nice day, Mike