See: OSR 5 manual page
Add an entry to /usr/lib/uucp/Systems:
bdsedin Never TCP,e Any - ogin: tuucp word: uucp
Add an entry to /usr/lib/uucp/Devices
TCP TCP,e - Any TCP 540
Make sure uucp entry in /etc/inetd.conf is enabled:
uucp stream tcp nowait NOLUID /usr/lib/uucp/uucpd uucpd
Add an entry in /usr/lib/uucp/Permissions
LOGNAME=tuucp \ COMMANDS=rmail:rnews:uucp:lp \ READ=/usr/spool/uucppublic:/usr/tmp \ WRITE=/usr/spool/uucppublic:/usr/tmp \ SENDFILES=yes REQUEST=yes
Make sure a user exists on the remote machine with correct user name and password.
Notes: