However as far as I can determine from my forward test is that, the from header is currently from the original message and not from the forwarder.
-----Original Message----- From: Scott Q. [mailto:qm...@top-consulting.net] Sent: Sunday, October 25, 2020 5:01 PM To: Marc Roos; dovecot Subject: Re: forwarding email with sieve of spf domains There's no ambiguity here, if you send a message, you are the sender. The envelope from should be yours. On Sunday, 25/10/2020 at 11:48 Marc Roos wrote: Say someone has setup spf for his domain and sends an email to a user that has in roundcube enabled the sieve forward. If the message is forwarded without altering the message headers, this could result in a message being blocked or not relayed, because sending hosts ip, is not in the spf of the from: domain. Possible solutions are: - add option if enabled, it replaces the From: with that of the email address of the sieve user. (Maybe move the original sender to the Reply-To header? Maybe exception for 'internal' forward?) - Upon processing the message, check the spf records, if they are enforced, do the above, otherwise do nothing. https://tools.ietf.org/html/rfc5228#section-4.2
