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
"Sender:" field SHOULD NOT be used. Otherwise, both fields SHOULD
In this paragraph a term "originator of the message" is used for the first
and the only time, and is nowhere defined. Other text only speaks of
"originator fields" (= From, Sender, Reply-To).
Also, the term "transmitter" is used here for the first time too,
and is never defined.
The proper term could be borrowed from the:
The "Sender:" field specifies the mailbox of the agent responsible
for the actual transmission of the message.
'originator of the message'
should actually be:
'mailbox of the agent responsible for the actual
transmission of the message'
(although this is unsightly long and repeating the just said)
'transmitter' (if it were defined elsewhere)
Looks like a term needs to be invented for the agent specified in
a Sender field, or the text rephrased to avoid the need for a