Sample apache config to always redirect to `ServerName`

example.conf

<VirtualHost *:443>
    ServerAdmin webmaster@localhost
    ServerName www.example.com
    ServerAlias example.com www.example.org example.org
    DocumentRoot /var/www/example

    # Canonical name is important otherwise SERVER_NAME will always equals HTTP_HOST
    UseCanonicalName On
    RewriteEngine On
    RewriteCond "%{SERVER_NAME} %{HTTP_HOST}" "!(^[^ ]*) \1" [NC]
    RewriteRule ^(.*)$ https://%{SERVER_NAME}$1 [R=301,L]

    SSLEngine on
    SSLCertificateFile /etc/apache2/ssl/chatterboxmarketing_com_au.crt
    SSLCertificateKeyFile /etc/apache2/ssl/chatterboxmarketing_com_au.key
    SSLCertificateChainFile /etc/apache2/ssl/chatterboxmarketing_com_au.ca-bundle

</VirtualHost>