>>>>> "LW" == Lawrence Weeks <[EMAIL PROTECTED]> writes:
LW> Hello, Is there an RFC relating to the Sender: header, and
LW> particularily relating to its use in messages sent by a mailing list?
Well, RFC822 has this to say:
4.4.1. FROM / RESENT-FROM
This field contains the identity of the person(s) who wished
this message to be sent. The message-creation process should
default this field to be a single, authenticated machine
address, indicating the AGENT (person, system or process)
entering the message. If this is not done, the "Sender" field
MUST be present. If the "From" field IS defaulted this way,
the "Sender" field is optional and is redundant with the
"From" field. In all cases, addresses in the "From" field
must be machine-usable (addr-specs) and may not contain named
lists (groups).
4.4.2. SENDER / RESENT-SENDER
This field contains the authenticated identity of the AGENT
(person, system or process) that sends the message. It is
intended for use when the sender is not the author of the mes-
sage, or to indicate who among a group of authors actually
sent the message. If the contents of the "Sender" field would
be completely redundant with the "From" field, then the
"Sender" field need not be present and its use is discouraged
(though still legal). In particular, the "Sender" field MUST
be present if it is NOT the same as the "From" Field.
There is more; grab a copy of the RFC and dig in. It's a great way to
spend an evening!
- J<
