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

Telnet Installation

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

Make sure Telnet is installed on your system.

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sudo apt install telnet -y
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sudo yum install telnet -y
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sudo dnf install telnet -y
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After installation, check if Telnet is installed by running:

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

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telnet smtp.example.com 10025
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Replace smtp.example.com with the actual SMTP server address.

Once connected, introduce yourself:

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

Use the MAIL FROM command to specify the sender:

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MAIL FROM:<user@test.com>
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The server should respond with 250 OK if accepted.

Use the RCPT TO command to define the recipient:

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RCPT TO:<user2@test.com>
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Again, you should receive a 250 OK response.

Use the DATA command to start the message:

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

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

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Subject: Test Email from Telnet From:user@test.comTo:user2@test.com  This is a test email sent using Telnet. .
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End the message with a single period (.) on a new line, then press Enter.

The server should respond with something like:

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250 OK: queued as XYZ123
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This confirms that the email has been accepted for delivery.

To exit, type:

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QUIT
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You should see a 221 Bye response.

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