Postfix Errors

i have installed virtualMin GPL in my Mac OSX 10.14.6. But it is not sending mail. The mails are getting queued with the error: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused I have googled about this error and find out the amavis service run on the port 10024. i have used netstat command to find out the active ports. The port 10024 is not in the list. So i tried commenting 10024 port in postfix/main.cf file then it returns error: Address Resolver Failure. Can you help me with what's the problem. Any Help will be much appreciated. I can also attach my postfix maon.cf file if you want...