Where to set root's email address?

[pigpen]

Hello all,

I'm looking for the proper way to set root's email address when using the
standard "/bin/mail" command (which a lot of daemons use; in my case smartd).
I'm not trying to forward root's mail, I only want to change his "From:" address
to something like "server admin <dork@hotmail.com>". I'm using sendmail on FC3.
Thank you in advance.