On Thu, Feb 14, 2008 at 07:48:50AM +0000, S.P.Zeidler wrote: > That's the mail equivalent of a source route, not an error. :) To be precise, that's the mail equivalent of IPv4 in IPv4 tunneling. Source routing looks like this: <@1.do.ma.in,@2.do.ma.in:mailbox%3.do.ma.in@localhost> -is