Hi, I need to archive all incoming mail for my virtual domains (by copying mail to dedicated archive mailbox) and then sort it according to address it has been delivered to.
One major drawback of existing milter-based solutions, as well as of virtual aliasing and BCC maps, is that in some cases neither "To:" header nor envelope-to contain actual recipient address. This can be the case of our local (virtual) address receiving forwarded mail from outside, or delivery address being result of address rewrite or alias expansion. In either case, we state that the actual delivery address is known only since the moment of virtual transport invocation (right?). In my case pipe(8) to Dovecot LDA is used as virtual transport. The question is, how do I organize mail copying simultaneously with virtual transport invocation (delivery), and how do I pass actual delivery address to mail archival system? This can be some message header or "plus" address. Thank you! Zohan
