Wietse, on mailstores (read: Dovecot) we often would like to know X-Original-To in order to apply SIEVE-Rules against the X-Original-To value.
Obviously it doesn't make sense to add that header and send it via SMTP/LMTP if a message has more than one recipient. But what if we set mumble_destination_recipient_limit=1. Would it then be safe and possible to forward X-Original-To via SMTP/LMTP? Dovecot (or any other receiver) could use the information and add the header. p@rick -- Patrick Ben Koetter p...@state-of-mind.de