Last Call Review of draft-melnikov-smtp-priority-

Request Review of draft-melnikov-smtp-priority
Requested rev. no specific revision (document currently at 21)
Type Last Call Review
Team Security Area Directorate (secdir)
Deadline 2012-03-28
Requested 2012-03-01
Authors Alexey Melnikov, Ken Carlberg
Draft last updated 2012-04-03
Completed reviews Genart Last Call review of -?? by Roni Even
Genart Last Call review of -?? by Roni Even
Secdir Last Call review of -?? by Chris Lonvick
Assignment Reviewer Chris Lonvick
State Completed
Review review-melnikov-smtp-priority-secdir-lc-lonvick-2012-04-03
Review completed: 2012-04-03



I have reviewed this document as part of the security directorate's
ongoing effort to review all IETF documents being processed by the
IESG.  These comments were written primarily for the benefit of the
security area directors.  Document editors and WG chairs should treat
these comments just like any other last call comments.

Overall, the proposal to insert a MT-PRIORITY header appears reasonable. 

I don't think that it opens any security threats that are not noted in the 


I am concerned that this feature can disrupt the DKIM protection as noted 

in section 11.1.  I see the problem here and I can't offer any suggestions 

to fix that.  I think that the authors have done well to document this.