<VirtualHost *:80>
    ServerName mail.DOMAIN

    ProxyPreserveHost On
    ProxyRequests Off

    RequestHeader set X-Real-IP %{REMOTE_ADDR}s
    RequestHeader set X-Forwarded-For %{REMOTE_ADDR}s
    RequestHeader set X-Forwarded-Proto "http"

    ProxyPass / http://127.0.0.1:8080/
    ProxyPassReverse / http://127.0.0.1:8080/

    ErrorLog ${APACHE_LOG_DIR}/stalwart_error.log
    CustomLog ${APACHE_LOG_DIR}/stalwart_access.log combined
</VirtualHost>