Hello Geof and Pedia,
Problem with e-mails rejected by UCSD Edu
facilities is due to security policy employed
over there.
UCSD Edu MTA uses Cisco web site
cintaining blaclisted e-mail servers.
I do not remember right now link
to a/m site but digging Internet you'll
find it for sure.
Most probably be you will find
your e-mail server listed here!
Last year I had EXACTLY SAME PROBLEM!
I contacted Brian Kantor off the list.
We exchanged some e-mail infos
and generally speaking problem got solved.
I would suggest you (Pedja) contact
Brian Kantor directly, but send your message
from different e-mail server!
Best regards.
Tom - sp2lob