HiI am using smtpd_sender_login_maps on submission port to enforce the envelope 'mail from:' command, and its working as expected. the problem however is that the user can still use any arbitrary 'From:' header field that she wants and opendkim will happily sign it. I am looking for a way to enforce the from: header filed to match the sasl authenticated username. ideally this should happen before queuing so i can reject the message while smtp session is still in progress.It is my understanding that header_checks can't be used for this as it's functionality is very limited. What are my options? can anyone please help?Thank you in advance
Best Regards,
