On Tue, Feb 15, 2000 at 12:15:28AM +0100, Byrial Jensen wrote:
> On Mon, Feb 14, 2000 at 15:50:42 -0600, David DeSimone wrote:
> > I don't remember if it is legal to put more than one address in the
> > From: header.
>
> It is legal according to RFC 822 if and only if you also have a
> Sender: header which states who among the authors actually sent
> the message.
OBNit: It's not "only if." From RFC822update:
The originator fields indicate the mailbox(es) of the source of the
message. The "From:" field specifies the author(s) of the message, that
is, the mailbox(es) of the person(s) or system(s) responsible for the
writing of the message. The "Sender:" field specifies the mailbox of the
agent responsible for the actual transmission of the message. For
example, if a secretary were to send a message for another person, the
mailbox of the secretary would appear in the "Sender:" field and the
mailbox of the actual author would appear in the "From:" field. If the
originator of the message can be indicated by a single mailbox and the
author and transmitter are identical, the "From:" field SHOULD be used
and the "Sender:" field SHOULD NOT be used. Otherwise, both fields
SHOULD appear.
Aside from it being "SHOULD NOT" rather than "MUST NOT," if the
secretary in the example were the transmitter, but not the author, the
"Sender;" line should appear even if there is only one address on the
"From:" line.
I wonder if there are _any_ MUAs that implement this?
-rex
