Apache mail server port

Apache James (formerly known as Apache Jakarta Mail) is a Java-based mail server that provides a robust and scalable solution for sending and receiving emails. By default, Apache James listens on the following ports:

1. SMTP (Simple Mail Transfer Protocol): Port 25 (TCP)
   • This is the standard port for sending and receiving emails using the SMTP protocol.
2. POP3 (Post Office Protocol version 3): Port 110 (TCP)
   • This is the standard port for retrieving emails using the POP3 protocol.
3. IMAP (Internet Message Access Protocol): Port 143 (TCP)
   • This is the standard port for retrieving emails using the IMAP protocol.
4. SSL/TLS (Secure Sockets Layer/Transport Layer Security): Port 465 (TCP)
   • This is the standard port for encrypting email communications using SSL/TLS.
5. STARTTLS (STARTTLS protocol): Port 587 (TCP)
   • This is the standard port for encrypting email communications using the STARTTLS protocol.

Note that these ports can be customized during the installation and configuration of Apache James. Additionally, some ISPs or network administrators may block certain ports or require specific configurations for email communication.

Here are some common scenarios where you might need to change the default ports:

• If you're behind a firewall or proxy server, you may need to configure the firewall or proxy server to allow traffic on the default ports.
• If you're using a non-standard port for another service, you may need to choose a different port for Apache James to avoid conflicts.
• If you're experiencing issues with email delivery or reception, you may need to troubleshoot port-related issues or configure Apache James to use a different port.

Remember to consult the Apache James documentation and configuration files for specific instructions on configuring the ports for your use case.