How to Simulate a Test Email to Verify EGS Functionality Using Telnet?

Telnet Installation

Windows:

Make sure Telnet is enabled under "Turn Windows features on or off."

Linux:

Make sure Telnet is installed on your system.

Debian/Ubuntu-based distributions:

RHEL/CentOS/Fedora:

For newer versions (CentOS 8+, RHEL 8+, Fedora):

Verify Installation:

After installation, check if Telnet is installed by running:

Turn off this option to allow EGS to accept the test email.

Simulate Email using Telnet

1. Connect to the SMTP Server

Open a terminal and use Telnet to connect to the SMTP server on port 10025

Replace smtp.example.com with the actual SMTP server address.

2. Greet the Server (HELO/EHLO)

Once connected, introduce yourself:

If the server supports EHLO, it will respond with additional SMTP options.

3. Specify the Sender's Email

Use the MAIL FROM command to specify the sender:

The server should respond with 250 OK if accepted.

4. Specify the Recipient's Email

Use the RCPT TO command to define the recipient:

Again, you should receive a 250 OK response.

5. Composing the Email

Use the DATA command to start the message:

You should see a prompt like 354 End data with <CRLF>.<CRLF>, indicating that you can now enter the email content.

6. Enter Email Content

Type the email body using the following format. A line must be added between the header and the body of the email.

End the message with a single period (.) on a new line, then press Enter.

7. Confirm and Send

The server should respond with something like:

This confirms that the email has been accepted for delivery.

8. Close the Connection

To exit, type:

You should see a 221 Bye response.