The zextras user’s password has to be changed as a first step. This is a very crucial task since the password for this user must be strong because they have complete control over all Carbonio CE functions. In the section Manage Global Administrators, you can find further information as well as the command to change the password.

In order to access the Carbonio Admin Panel after changing the password, open a supported browser and navigate to the Proxy Node’s IP address or hostname and port 6071 (for example, https://172.16.0.12:6071/). Log in using the user zextras@example.com and the newly-changed password.

If the login process is successful, navigate to Domains, choose example.com, and then under General Settings, specify:

• Setting the Public Server Host Name to https://mail.example.com
• The Public Service Port, with a 443 setting.

The URL that users must access in order to use Carbonio CE’s capabilities is represented by these two values added together.