Mailcow

When installing Mailcow, it is important to deactivate the recursive DNS server. This is activated by default and can lead to problems.

In the file /opt/mailcow-dockerized/data/conf/unbound/unbound.conf the following must be added at the end of the file:

forward-zone:
        name: "."
        forward-addr: 1.1.1.1
        forward-addr: 8.8.8.8