Before you send a message to anyone, you should, of course, be sure
that your recipient is likely to look for e-mail. Then you must know
the recipient's internet address. With your Physics department
account you can receive mail at the address
where <username> should be replaced by your user name without
the angle brackets <>. The internet address structure is
hierarchical, with domain names separated by a period. All US
educational institutions have addresses ending with .edu. All
internet addresses on the University of Utah campus end with .utah.edu. Commonly the first part of the address is the logical
name of a single machine. However, the physics department has chosen
to use a generic name physics to receive mail. The user name is
separated from the machine designation with an sign.
It is not always necessary to use the full internet address to send
mail. If you are sending mail to another user on the physics network,
you may simply use the username, omitting physics.utah.edu. If you are sending to another machine on the
campus network, it is sometimes possible to omit utah.edu.