configure SMTP-AUTH and TLS

Hi ,
do i have to change any of these values during ispconfig installation. my ip is 192.168.1.200
do i have to add my domain name (ex server1.example.com)?
do i have to enter my network 192.168.1.0/255.255.255.0 in the last line?

postconf -e 'smtpd_sasl_local_domain ='
postconf -e 'smtpd_sasl_auth_enable = yes'
postconf -e 'smtpd_sasl_security_options = noanonymous'
postconf -e 'broken_sasl_auth_clients = yes'
postconf -e 'smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination'
postconf -e 'inet_interfaces = all'
postconf -e 'mynetworks = 127.0.0.0/8'

i want to send and receive mails from internet(yahoo.com) and also lan.
pls let me know.

 

sorry for posting in the wrong place

 

continue here: http://www.howtoforge.com/forums/showthread.php?t=13166