Re: [Gnus 5.2.14] message-make-sender

[Richard Pieri <ratinox@unilab.dfci.harvard.edu>]

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>>>>> "aj" == =?ISO-2022-JP?Q?=1B$B<morioka@jaist ac jp
>>>>> <morioka@jaist.ac.jp> writes:

aj> Sender field must include a mail reachable real address.

Nope.  From RFC822:

     authentic   =   "From"       ":"   mailbox  ; Single author
                 / ( "Sender"     ":"   mailbox  ; Actual submittor
                     "From"       ":" 1#mailbox) ; Multiple authors
                                                 ;  or not sender
[...]
     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.

[For instance, a mailing list manager will set the Sender: field because
it is responsible for sending messages but it does not originate
messages. --Rat]

        The Sender mailbox  specification  includes  a  word  sequence
        which  must correspond to a specific agent (i.e., a human user
        or a computer program) rather than a standard  address.   This
        indicates  the  expectation  that  the field will identify the
        single agent (person,  system,  or  process)  responsible  for
        sending  the mail and not simply include the name of a mailbox
        from which the mail was sent.  For example in the  case  of  a
        shared login name, the name, by itself, would not be adequate.
        The local-part address unit, which refers to  this  agent,  is
        expected to be a computer system term, and not (for example) a
        generalized person reference which can  be  used  outside  the
        network text message context.

[In fact, not only does Sender: not need to contain a valid Internet
mail address, it generally should not contain one. --Rat]

        Since the critical function served by the  "Sender"  field  is
        identification  of  the agent responsible for sending mail and
        since computer programs cannot be held accountable  for  their
        behavior, it is strongly recommended that when a computer pro-
        gram generates a message, the human  who  is  responsible  for
        that program be referenced as part of the "Sender" field mail-
        box specification.

[Back to mailing lists, Majordomo sets Sender: to the list owner's
address. --Rat]

aj> It is used when mailbox of From field is not senders real address or
aj> it contains multiple mailboxes.

No, that is the Reply-To: header.

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Richard Pieri/Information Services \ When in doubt, cop an attitude. -A cat's
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