sendmail_enable="NO" /"YES"/"MAYBE" ?

[Richard Shea]

Hi - I currently have sendmail_enable="NO" in my rc.conf file. This
allows emails to be sent from the FBSD machine however I would like one
other machine on the LAN to use the FBSD machine as a SMTP machine. 

I think sendmail_enable="YES" would do this but would then allow every
other machine on the LAN to use sendmail ? Is there some way I could
limit sendmail users by IP address ?

thanks

richard.