> Wietse, thank you,
> > Postfix local/pipe/virtual delivery agents record the delivered
> > to address in the Delivered-To: header
That is, the final recipient address after alias processing and
forwarding. All mail that is delivered to the same mailbox has the
same Delivered-To: address.
Postfix local/pipe/virtual delivery agents record the original
recipient in the X-Original-To: header. That is, the recipient
address before alias processing and forwarding.
You can embed the original recipient as an extension to the final
recipient address, if you must insist on using the Delivered-To:
Using pcre-based recipient_bcc_maps: