I've been wondering for some time why I can't get the mail function in
yum-updatesd to work, and I finally decided to have a look at the code.

What I found is that it does not use the "normal" way of sending mail by
invoking "sendmail", but instead tries to do it via SMTP. To make things worse,
you cannot configure which SMTP server it should talk to, so you have to have a
MSA running locally on each and every machine.

Please fix into something more sane

(Also, changing the default address to "root" instead of "root@localhost" would
also be nice and more in line with other software and also make it work directly
with more mail systems)