Another thing to look at is SMTP banners:
220 mx2.corp.home.net ESMTP Sendmail 8.11.6/8.11.6; Sat, 2 Mar 2002 16:59:31 -0800 (PST) Excite@Home Unpowered By AT&T
May be they will use some route announcements to spell out more "last wish" messages...
Rubens Kuhl Jr.