If you use an email client like Apple Mail, Outlook, or Thunderbird, you may encounter problems in sending emails.
The VPN blocks all data transfer through the unsecured port no. 25, instead, it uses encrypted communications through ports 587 or 465. If your email configuration uses port 25, please consult your service provider’s instructions on how to configure your email client to use other secure ports, such as 587 or 465. This will help to enable to send and receive the email.