[Dovecot] Pigeon Sieve, redirect action and SPF

[Pedro Ribeiro]

Since I've upgraded to dovecot 2.0.13 + Pigeonhole 0.2.3 (Gentoo 
package) I've received a few complains of users about rejected messages.

Investigating the problem, I've seen that when the external sender 
server publishes SPF information, when some message is sent from there 
to one of my users that has a Sieve redirect action active to another 
external system (that does SPF validation), the message is rejected 
because our system only changes the envelope "rcpt to" in the 
redirection and the "mail from" remains the original.
When the end server does the SPF validation it fails because my server 
isn't in the IP allow list for the domain of the original sender.

I never seen this problem in the old Dovecot+CMUSieve.

Shouldn't the sender be changed in the envelope "mail from" from the 
original one to the recipient that made the Sieve redirection?

Keep the excellent work with dovecot and related projects!

TIA!

-- 
Best regards,

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Pedro Ribeiro
IPLNet - Rede de dados e comunicações
Instituto Politécnico de Lisboa (IPL)
Mail: mailto:pribeiro AT net.ipl.pt
VoIP: sip:pribeiro AT net.ipl.pt
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