230247 - Make identity picker work for mailing lists

Status: RESOLVED DUPLICATE of bug 461669

(MailNews Core :: Composition, enhancement)

Description

[Ben Bucksch (:BenB)]

If you want to post to a mailing list, you usually have to use the subscribed
address (spam blocking). This may not be your primary address (again e.g. spam
prevention). If you hit reply, the email address over which you received the
mailing list post should be preselected as identity (if listed at all).

Bug 230230 tried to fix that in some cases (your own email address domain
matches the mailing list's domain), but not the majority of cases where the
mailing list belongs to a third party.

Suggestion, quoted from the other bug:

Usually, the email address which is subscribed to the mailing list is hidden in
the Received headers somewhere *, unfortuantely that's not strictly formatted.
You might want to plaintext-search those headers, if (and only if) you noticed
that it's a mailing list post.

There are standard headers establishing for mailing lists, e.g. List-Post, and
other clients such as mutt use these to offer mailing list specific functions. I
don't know the details, but it may be worth checking what these clients do, if
they had any better ideas.

*Example
Received: ...
Received: from mozdev.mozdev.org (mozdev.org [167.206.76.23])
	by firespit.beonex.com (Postfix) with SMTP id 02F93CC104D3
	for <[e-mail]>; Tue,  6 Jan 2004 08:21:32 -0600 (CST)
Received: ...

Comment 1

[Bob Snyder]

Searching Received: headers will work for many users, although it'll likely fail
for local aliases/mailing lists, and some MTAs or MTA configurations don't put
the destination in the header.

If you do search for these, you'll want to stop at the first match with an
identity, since there could be several forwardings done each with a different
destination.

Other possible headers:

Delivered-To:
X-Delivered-To:
X-Original-To:
Envelope-To:
X-Envelope-To:
X-Delivered-To:
X-Rcpt-To:
X-Real-To:

There's discussion of the various headers (in the context of Procmail filtering
at http://www.ii.com/internet/robots/procmail/qs/#envelope

Comment 2

[Constantine A. Murenin]

(In reply to comment #0)
> Usually, the email address which is subscribed to the mailing list is hidden in
> the Received headers somewhere *, unfortuantely that's not strictly formatted.
> You might want to plaintext-search those headers, if (and only if) you noticed
> that it's a mailing list post.

Why do we want to know exactly that it's a mailing list? What we can do is try
to search Received and other headers that were suggested iff To and CC both do
not contain any of our identities. There is no reason we should care if it is a
mailing list or not. (I.e. if (!identityFound) then {searchReceived()}.)

Comment 3

[Lorenzo Colitti]

What about "Original-Recipient"?

I get "Original-Recipient: rfc822;[e-mail]" in my mailing lists.

Comment 4

[Dan Mosedale (:dmosedale, :dmose)]

Bug 264770 describes a cleaner way to implement the requested feature here.

Comment 5

[Ken Crouch]

Same issue. My mailing lists show the list's address in the "Delivered-To:" field and my actual address as the "Envelope-to:". The "Envelope-to:" address matches one of my identities, but when I reply, the correct identity is never selected. Nothing else in the headers matches an identity.

Comment 6

[Wayne Mery (:wsmwk)]

xref Bug 499080 - nice/easy UI for mailing list filtering using message headers

Comment 10

[Magnus Melin [:mkmelin]]

This was fixed by bug 461669, taking Delivered-To into account.