I cannot send e-mail from my VPS.

In the VPS service, some ports are being blocked, so as to protect the Internet from unsolicited mail also known as SPAM. The problem can be solved by altering the firewall of the VPS in question. To do this, it is necessary to have the Firewall supplementary service ordered for the VPS. It allows altering the rules on the virtualization platform level from the Customer Portal. Changing the rules inside the VPS won’t solve the problem. This is why it is not possible to change the firewall rules in the case of the test Free VPS. If you need to alter the firewall settings, please upgrade to the paid VPS and order the Firewall supplementary service.