[Dovecot] sieve redirect action

[Steffen Kaiser]

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On Thu, 30 Jul 2009, Stephan Bosch wrote:

> > How do you look at adding one more header, for example X-Sieve-Forward-From:
> > 
> > Now, when redirect action is in use - mail forwards using sendmail command line interface. The problem that there is no suitable way to know which user's script has generate redirect. Received: header may contain envelope receiver but this is valid if only 1 "rcpt to:" command was specified on SMTP session.
> > This invokes problem when forwarding mail to non-local domains, breaking such things like SPF. I'd like to setup SRS for fixing this, but I don't know sender("sieve local user") mail. Adding one header with valid local user e-mail address will fix this.
> > Google add 2 headers for this -  X-Forwarded-To: and X-Forwarded-For: .
> > 
> > What do you think about this ? 
> I have no objection, but then again my experience on this subject is 
> pretty bleak. Does anyone else have comments?

Basically I like the idea.

I've seen

X-Resent-By: Forwarder <email at hoster.example.com>
X-Resent-For: steffen at example.com
X-Resent-To: kaiser at example.net

inserted by one of my hosters.

Pine adds RFC 2822 sec 3.6.6 style headers (RFC 4021 sec 2.1.14 ff.)

ReSent-Date: Thu, 30 Jul 2009 14:36:18 +0200 (CEST)
ReSent-From: re-sender
ReSent-To: new recipients
ReSent-Subject: new Subject
ReSent-Message-ID: New msgid
ReSent-User-Agent: New MUA id string

However, the section starts with: "Resent fields SHOULD be added to any 
message that is reintroduced by a user into the transport system." Dunno, 
if "by a user" applies to Sieve, too.

IMHO, it should be customizable.

Bye,

- -- 
Steffen Kaiser
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