Subject: RE MDN's

From: Geoff Marshall <[email-masked]>
Date: Tue, 19 Oct 1999 07:16:39 -0400

Hi Vivian
> 
> A positive MDN should have the same restrictions as the negative MDN, in
> that it should be optional (sending one can be turned off, just as
> responding to an MDN request is optional).
> 
> Vivian

IMHO, the receiving UA MUST respond with an appropriate
positive or negative MDN if ALL the following conditions are met.

1) Receiving UA is an automated device such as an Internet-enabled Fax
Machine or off-ramp
2) If MDN was requested by sender UA
3) If the message contains an attachment with application=faxbw or any
other application whose name starts with the letters 'fax' .

eg 
Content-type: image/ tiff; application=faxbw
Content-type: image/ tiff; application=faxcolor

This would get these boxes to actually provide some sensible and usefull
information.

Geoff