How to change logo from server mail Zimbra

Remember to be compliant to the license when using de Open Source version.

A snippet from https://blog.zimbra.com/2015/09/change-login-app-logo-open-source-network-edition/ suggests to place 2 banners in the /opt/zimbra/jetty/webapps/zimbra/logos/ folder and change the configuration with:

zmprov md example.com zimbraSkinLogoURL https://mail.example.com
zmprov md example.com zimbraSkinLogoLoginBanner /logos/MyLoginBanner.png
zmprov md example.com zimbraSkinLogoAppBanner /logos/MyAppBanner.png
zmmailboxdctl restart