using sendmail from a different host

Hello,

I have an existing redhat 9 boxes, BOX1 and BOX2,
i also setup BOX1 to be a mailserver and everything is doin fine. On BOX1, im using mail (/bin/mail) on my cron lists and also working well.

but when i use the same cron entry on BOX2, i dont receive mail.

How can i use BOX1 as MAIL host form BOX2? or is this the proper way of setting this up?

Thank You
Elmer
GNU/Linux Enthusiast