ARPANET and anonymous ftp, etc...

[Mike Wexler]

I am a user of a Sun 2-120 running Unix 4.2BSD.
How do I get files that are list as being available for
anonymous ftp of Arpanet sites?  Is there any way of sending mail
to Arpanet sites without putting a backslash before the at sign.
When I do replies to articles posted by someone on the Arpanet,
sendmail tells be that it doesn't know about the host that the mail comes
from.  If I manually retype the address and put a backslash before it
I can send it through fine.

								mike(trwrb!pertec!peregrine!mike)

p.s.: Don't tell me to ask my systems adminstrator, because I AM the system
adminstrator.