forwarding email with sieve of spf domains

[Scott Q.]

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
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