forwarding email with sieve of spf domains

[Marc Roos]

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:qmail at 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