The method used for generating the default value for <a href="/nixpkgs/option/services.postfix.settings.main.mynetworks"><a href="/nixpkgs/option/mynetworks" rel="nofollow">mynetworks</a></a>, if that option is unset.<a href="https://www.postfix.org/postconf.5.html#mynetworks_style" rel="nofollow">https://www.postfix.org/postconf.5.html#mynetworks_style</a>.

services.postfix.settings.main.mynetworks_style

The method used for generating the default value for mynetworks, if that option is unset.https://w…