On Wednesday 12 January 2000 Marck D. Pearlstone wrote:
> It is now clear that TB sends the "Reply-To" name in the SMTP FROM
> address when talking to SMTP relay servers.
ftp://src.doc.ic.ac.uk/rfc/rfc821.txt
ftp://src.doc.ic.ac.uk/rfc/rfc822.txt
> I can see the sense in
> this. Any rejection notices are routed to the SMTP FROM: address and,
> if you have specified a Reply-To:, then perhaps you really do wanted
> bounce messages to go there instead of to the address in the message
> x-header From: field. But, it is the SMTP FROM (as opposed to the
> "From:" field) which is used by the list server to verify that the
> sender is a member.
I've responded privately to this. I'm not going to quote the above
RFCs here (unless anyone's mad enough to want to read the long and
technical ramblings I sent to Marck ;-), suffice it to say that
between them they give a pretty strong hint that this is Not The Right
Thing To Do.
> 2) I will repeat this as a bug report to both RITLabs (who could
> possibly make it an option as to which of the From/Reply-To addresses
> to use in the SMTP FROM protocol line) and to the makers of the
> ListServer regarding a greater latitude on which addresses are used to
> validate list membership.
The specific problem with the listserv is that this validation is a
security feature to protect legitimate members of the list. Envelope
addresses are to a small extent trusted - more so than message headers
which as far as the transport is concerned really could be anything. I
can see why it would check only the envelope and not the header
addresses (and half expect them to tell you so themselves). If The
Bat! was behaving itself, this wouldn't be an issue.
> ...unless someone has something more definitive to contribute on this
> topic before I go making bold statements to authors... :-)
No, this is a bug in The Bat! and should be fixed. I did report it six
months ago. IMO it should not be an option - the RFCs are about as
clear as they ever get that it is not the Reply-To: address which is
used as the envelope sender address.
John
--
you gave me something that i could touch in a world where i'd had too much
something i could feel with my broken hands full of lost ideals but soon i'm
returning to you my friend and we'll go where the rivers end in the silver sea
and i'll carry you if you carry me
--
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