That page suggests adding a "Sender" header. Up to now I've always used the "Resent-from" header for the purpose of complying with the SPF requirements (pretending to be a forwarding service).
Do you now if there is an advantage of using one versus the other? Reading the RFC it looks like the "Sender" might be a bit more accurate in this context, but the Resent-From may look better in e-mail clients.
Do you now if there is an advantage of using one versus the other? Reading the RFC it looks like the "Sender" might be a bit more accurate in this context, but the Resent-From may look better in e-mail clients.