Anyway, it's moot point as you already know that the person assigned to VERP takes an awfully long time to getting a round tuit, so it's unlikely to be finished soon ( http://siesta.unixbeard.net/svn/trunk/siesta/TODO )
Hmmm... that says:
======================================================= =head2 Revisit bounce handling (VERP stuff)
Nicholas Clark wants to look at this =======================================================
;-)
Liz