On Sun, Oct 12, 2014 at 07:58:23PM +0000, Viktor Dukhovni wrote: > On Sun, Oct 12, 2014 at 03:55:21PM -0400, Wietse Venema wrote: > > > Do you want to have the PREPEND headers AFTER the Received: header? > > It is certainly more consistent with any downstream milter processing. > Otherwise we'd have to count the number of prepended headers, > communicate it to cleanup(8) and hide them all from milters in > addition to hiding the top-most Received header.
The downside is that one can no longer reliably tell who added a given header. Placing local modifications above "Received" makes it easier to understand the message "history". -- Viktor.