Hello, I would like your opinion on a possible envelope and headers rewriting for authenticated outgoing messages in a way analogous to VERP (I believe).
Story: when giving a contact address to an unknown recipient I always (almost) use a return address with encoded the domain of the recipient in the local part suffix, so that I can whitelist it (if necessary) or even find out if the recipient does bad things with my address*. Unfortunately many MUA do not allow changing the envelope sender or even the header From: if not doing some configuration steps (and making an already long list longer...). With an automated rewriting (not in the canonical meaning of address rewriting in exim) I would instead just use a particular suffix (or prefix) and exim would rewrite the address using the (only) recipient domain. For example: sending an e-mail from [EMAIL PROTECTED] to [EMAIL PROTECTED] would have the envelope sender and h_from rewritten as mail [EMAIL PROTECTED] To accomplish this I could presumably set an acl variable in the rcpt acl with the rewritten address and then in the router change the From: with headers_remove and headers_add, and in the transport change the return_path. Apart from the technicalities, do you think there are any major drawbacks? I do not care about digital signatures as long as they are not used with untrusted recipients. Certainly a device like this would make much easier for most users not to give away their real address too often. Giuliano *(Once I found virus coming from an address that I had used a couple of weeks earlier with LG, in the face of any data protection act/ privacy laws). -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
