Re: Fully-qualifying Email addresses in outgoing mail

[patl@cag.lcs.mit.edu (Patrick J. LoPresti)]

Per Abrahamsen <abraham@dina.kvl.dk> writes:

> (setq mail-host-address "cag.lcs.mit.edu")
> 
> Or did I misunderstood the problem?

This takes care of the problem for "From" line generation, but it does
not affect what appears in the "To" and "CC" headers.

When a user provides "To: patl" in the header, message-mode does no
manipulation of that at all (as far as I can tell).  It simply passes
it off as-is to the message-send-mail-function.

When that function is 'message-send-mail-with-qmail, all is well
because qmail-inject performs all sorts of canonicalization on the
message: It inserts Date and Message-ID headers (if needed); it fully
qualifies all Email addresses; and so on.

But when you use 'smtpmail-send-it, the message goes straight to the
smtp daemon which performs no canonicalizations of any kind.  For
headers like Date and Message-ID, this is OK, because message-mode has
already fixed those up as required.  But for "To" and "CC", this is
problematic for two reasons: 1) The unqualified addresses are
processed by the smtp *host*, which is not the right thing at all; and
2) the unqualified addresses appear in the recipient's copy of the
message, which is also broken.

I am pretty sure what I need is for message-mode to be able to
canonicalize the To and CC fields, in the same way it performs other
checks on the message.

 - Pat