--On 19 November 2008 08:33:34 -0500 Rich Kulawiec <rsk at gsp.org> wrote:
On Thu, Nov 20, 2008 at 12:16:22AM +1200, Franck Martin wrote:but all MTA's send NDR, this is part of their role? or should we stop that?The latter. There's no point in sending a NDR in response to malware or spam (and many reasons not to). Just reject it outright during the SMTP conversation, and let the sending system deal with that.
Agreed, but the OP's point was that such a reply (which may be unrelated to the message source or content) can be sent if you're sure the message was sent by the owner of the envelope sender - ie with a DKIM pass.
-- Ian Eiloart IT Services, University of Sussex x3148 _______________________________________________ Asrg mailing list Asrg at irtf.org https://www.irtf.org/mailman/listinfo/asrg