Connection refused by AMAVISD-NEW

Solution 1:

Looks like you have a typo here. Looks at the error message

warning: connect to transport private/amavis: Connection refused

You instruct postfix to send email via transport amavis, but in your master.cf, you define transport smtp-amavis

smtp-amavis unix  -    -     -    -   2 smtp
    ...

Check if you have define transport amavis somewhere else in your config. For example in your main.cf

content_filter = amavis:[127.0.0.1]:10024

or in the other maps file in directory /etc/postfix.