By default, postfix is removing the bcc recipient before to pass the mail to the delivery queue. How can you set up postfix to keep the bcc recipient information or add an email header to keep it before the delivery?
We would like to use this feature in the context of a catchall mailbox to know witch recipient has received the mail.
Of course, we can track the information with the postfix queue-id in the maillog but it should be more easy to have it directly in the mail header....
We are runing postfix 2.2.10 and the delivery is dovecot 1.1.2.
Thanks in advance for any hint or solution...