You can set additional parameters for each remote machine to define the following:
Ways that the remote machine can receive files from your machine
Directories for which the remote machine has read and write permission
Commands that the remote machine can use for remote execution
A typical Permissions entry follows:
MACHINE=datsun LOGNAME=Udatsun VALIDATE=datsun COMMANDS=rmail REQUEST=yes SENDFILES=yes
This entry allows files to be sent and be received to and from the “normal” UUCP directories, not from anywhere in the system. The entry also causes the UUCP user name to be validated at login time.