Good afternoon, I have a Postfix machine that accepts outgoing mail when MUA has authenticated. Later I send that email to Amavis in order to get tagged or signed (with DKIM and Altermime). When that mails come back from Amavis (in the Postfix smtpd instance where amavis processed mail is delivered) I would needed to know which authenticated user has delivered the mail to this mail machine, in order to be able to call a FILTER action from a policy (in this Postfix smtpd instance for receiving mail processed by Amavisd). The problem is that coming mail from Amavis, does not auth so in the policy elements I don't have the sasl_username.
Could I achieve in some manner, to know the sasl authenticated user in the smtpd instance for mail coming from Amavis?. Could I do perhaps with some policy element, try to later relate an incoming mail (where I see sasl_username) with that same email in the instance that comes from Amavis for being able to know which FILTER action should I use?. I know there's a possibility of using smtpd sasl authenticated header but I don't really trust in that way... Any ideas? :) Best regards, -- Egoitz Aurrekoetxea