[kisong]

What i'm trying to do is use the mynetworks setting to allow SMTP connections from my block of IP Addresses (70.88.225.1 through 70.88.225.6).

Do I have to do this in CIDR format? If so, what would be the exact CIDR I would use?

Originally Posted by falko

Have a look here: http://www.howtoforge.com/perfect_setup_fedora_core_4

You can put the IP addresses that need no authentication into the variable mynetworks in /etc/postfix/main.cf.