I've recently updated virtualmin on our live server and am getting a warning when logging in about not being configured correctly. When I run the configuration checker it comes up with
Your Postfix configuration is missing the system's mail hostname 'hostname' from the mydestination line, which will cause mail to bounce.
however we have our mail externally on google mail. We need to postfix to send out mail from the server but not store mail sent from the server to 'hostname' on the server, which is what I believe would happen if I set mydestination if I'm not wrong. Is there a way to make this 'error' go away?