[Exim] Log error

Can anybody tell me for sure what this error means

2004-06-15 23:42:13 1BaMdB-000478-8L <= <> R=1BaMdA-000471-SB U=exim
P=local S=3094
2004-06-15 23:42:14 1BaMdB-000478-8L ** wiadomskiaden@???
R=dnslookup T=remote_smtp: SMTP error from remote mailer after RCPT
TO:<wiadomskiaden@???>: host sitemail.everyone.net
[216.200.145.51]: 550 Recipient Rejected: Excessive resource consumption
2004-06-15 23:42:14 1BaMdB-000478-8L Frozen (delivery error message)
2004-06-15 23:42:33 1BaMdB-000478-8L Message is frozen

I figure it is a bounce message and it never got fully delivered, but
can anybody give me a little more detail. Why was it frozen ?

Ron
--
Ron McKeating
Senior IT Services Specialist
Internet Services and Software Solutions
Loughborough University
01509 222329