getting mail to use the smtp server

I have a question for a mail program wiz. I'm using 'mail' to send out a message from within a program using "/usr/bin/mail -s "subject" < "filename &" How do I make it talk to the network's smtp server? It works fine is I have the local sendmail running (except, of course that it can't get out thru the firewall :) ) When I was using elm to do this, it used the smtp server without any intervention from me, so I'm a bit at a loss... alan -- http://www.ibgames.net/alan Registered Linux user #6822 http://counter.li.org Winding Down - Weekly Tech Newsletter - subscribe at http://www.ibgames.net/alan/winding/mailing.html