I've added my local ip adress range to allow computers in my lan to send e-mails though my local postfix server. Is this the correct setting to achieve this? And am I correct that with the current mynetworks configuration only clients in my lan can user the smtp server? According to mxtoolbox I don't have an open relay. Are there other security measures I should take?
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.1.0/24