# 6.2.2 Requirements and settings for use of the Newsletter module

For correct use of the Newsletter module the following requirements must be met, or the following configuration must be applied:

**vtenext must be public** (accessible via Internet): this requirement guarantees correct tracking of the opening of emails and clicks on the links they contain. Make sure the variable  
$site\_URL of the file /htdocs/config.inc.php is set to the vtenext public address.

Example: $site\_URL = ‘https://crm.dominioazienda.it’;

**Configuration of email address for Bounces:**

Bounces are invalid email addresses to which Newsletter sending has failed. A dedicated email address is needed for the management of bounced messages, using the company mail domain, i.e. the domain show in Settings > Mail server > SMTP.

**Warning!** If the domain is different there’s a risk that the emails sent from the Newsletter module are marked as spam.