[Dovecot] Dovecot Sieve: Vacation Recipient

[Steffen Kaiser]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Thu, 7 Jan 2010, Lukas Kolbe wrote:

> I tried to use the sieve vacation plugin, but we're facing a little
> problem: our user's addresses are <uid>@<domain>, and if they want to
> use imap and sieve, they can have a forward to <uid>@imap.<domain>. The
> return-path, and hence the address the vacation message is sent to, is
> then <uid>@<domain> and not the original sender of the message. Is there
> any way to circumvent this? Sending a vacation back to oneself doesn't

Hmm, I understand to "forward" a mail so that a MTA accepts a message, 
then determines to send it to another address. In this process the 
original sender (aka argument of the MAIL FROM SMTP command) is preserved.

What you describe is that the message is delivered by the MTA locally, but 
then send to another address.

Both methods do have their pros and cons:

+ first one preserves the original sender, second does not

+ first one fails on SPF tests, second one does not

You will either need

a) to switch to the first method and use forwarding at MTA stage or

b) to determine a way to re-send the message with the original sender, 
which is not "From:" but maybe "Return-Path", (sort of the same as first 
method, but handled manually) or

c) to pass along the original sender, e.g. in a custom header, to the 
dovecot server and patch the Sieve implementation to use that info.

Regards,

- -- 
Steffen Kaiser
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iQEVAwUBS0Xmhb+Vh58GPL/cAQI9ZQf+OtydPwPWSHJbI+g3Bsj3jAiYcQTejTkY
eKjCkcyGBqaT1mqXGWVmAZXqyvjyANfGXT5VIVwzIKNCDP1eFRPEmjcPgpI/MnIV
xtApuUNDbXPubo258QEdQmb4ZBOt+x4cXMELiQ1gKttCwHXLbMEbuXqdweym92m7
12TdQvKGPPr/Y1PQoayNpvSMTyfaymFQ98slZ7xewoEQ+YNL0XTCtpuPQhkP/7sd
0+5ouENogkzN9BADBt3lElQdD4/bjeRftZe6rdLqM43qczq8mC0si5/2q/8U5H4R
hE0Of5bqYYyRRnG5RbmheaKQzNp1bbgyIJcOeNG7UzxOoFwg/ZhGJA==
=3ArD
-----END PGP SIGNATURE-----