Is port 25 open or closed in VPS?

Port 25 is used for SMTP (Simple Mail Transfer Protocol) traffic. It is used for communication between email servers. However, port 25 is closed in VPS services due to the risks it poses. One example of these risks is that bulk emails can be sent using port 25. This can result in the sent emails being flagged as spam and the server’s IP address being blacklisted.

What can you use instead of port 25?

In your VPS service, you can use port 587 or port 465 instead of port 25.

• Port 587: Preferred by modern email clients. It provides encryption with TLS.
• Port 465: Used for secure email sending with SSL.

By using these ports, you can ensure more secure communication with TLS/SSL.