HDR From: The Post Office <postmaster>
HDR Sender:	mailer-daemon
SUB Subject: Invalid domain name

Your message arrived with an address that made reference to a domain
called "utoronto" or "utoronto.edu" or "toronto.ca", which does not exist.
All domains within the University of Toronto are registered officially
within both:

	utoronto.ca
and
	toronto.edu

You may try restating the offending addresses using one of these domains.