>On Feb 26, 2009 at 18:18 -0500, Nathan Brindle wrote:
>=>At 02:35 PM 2/26/2009 -0800, Randy Klumph wrote:
>=>>Resent-from: [log in to unmask]
>=>
>=>That's what's causing the problem.
>
>Don't shoot the messenger....(I don't want to start a SPF discussion
>war.)
>
>This looks a whole lot to me like they are doing Sender Rewriting Scheme
>(SRS).  See <http://www.openspf.org/SRS> and
><http://en.wikipedia.org/wiki/Sender_Rewriting_Scheme>.

They definitely are doing that with the return path:

>Return-path: <[log in to unmask]>

Neither of the links you mention the 'Resent-From:' header (because
they both deal with SPF which doesn't care about such headers), but I
think I see what they're doing there: it's a similar attempt to deal
with Sender ID.  <http://en.wikipedia.org/wiki/Sender_ID>

Anyway, if the munged address
([log in to unmask] in this case) is
always the same for the same user then I agree that the best (though
annoying) way to deal with this problem is to add the munged address
to the mailing list and set it to NOMAIL.  This should only be
necessary for users who use a message forwarding service like
securence, fortunately.  (It is particularly annoying that the
addresses contain characters like '/', but such addresses are legal,
so what are you going to do?)

I don't see a good other way around this from either LISTSERV or
securence's perspective, unfortunately, at least if securence wants
to continue to be Sender ID-friendly.  In order for messages sent via
securence to not fail the Sender ID tests the return address of the
message has to be from a domain that securence controls, generally;
and if securence does that then LISTSERV is going to interpret that
return address as the source of the message, since that's what the
return address is for.

Anyway, that's my analysis, for what it's worth.
--
Jacob Haller, Technical Support, L-Soft international, Inc
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