*MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS: (A better name of this option should be MAIN_EXTERNAL_MAIL_CLIENT_IP_ADDRESS). Set here the list of IPs where your Dolibarr instances are hosted. So when your customer go into the setup area of email: | *MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS: (A better name of this option should be MAIN_EXTERNAL_MAIL_CLIENT_IP_ADDRESS). Set here the list of IPs where your Dolibarr instances are hosted. So when your customer go into the setup area of email: |