How do I send an email using Telnet?

How do I send an email using Telnet?

How to send email using telnet

  1. Open your command prompt.
  2. Now, connect with telnet using the following command: telnet 25.
  3. Type ehlo
  4. Type mail from: [email protected]: mail from: [email protected].

What are SMTP commands?

SMTP commands

Subcommand Supported by SMTP Server Description
EHLO NO Identifies the domain name of the sending host to SMTP.
EXPN YES Verifies whether a mailbox exists on the local host.
HELO YES Identifies the domain name of the sending host to SMTP.
HELP YES Provides help with SMTP commands.

How do I test my SMTP port?

To test the SMTP service, follow these steps:

  1. On a client computer running Windows Server or Windows 10 (with telnet client installed), type. Telnet at a command prompt, and then press ENTER.
  2. At the telnet prompt, type set LocalEcho, press ENTER, and then type open 25, and then press ENTER.

How do I SMTP from command prompt?

How To Send Email Locally Using Command Prompt

  1. Open Windows Command Prompt using Start > Command Prompt or via Run > CMD.
  2. Telnet to the mail server by typing telnet 25.
  3. Once connected, we must initiate the mail sending process queue.
  4. Now we must set the sending mail address.
  5. Now we set the to address.

How do I telnet to a SMTP server?

In this article

  1. What do you need to know before you begin?
  2. Step 1: Install the Telnet Client on your computer.
  3. Step 2: Find the FQDN or IP address of the destination SMTP server.
  4. Step 3: Use Telnet on Port 25 to test SMTP communication.
  5. Step 4: Success and error messages in the Telnet Session.

How do I telnet from command prompt?


  1. Open a command prompt.
  2. Type in “telnet ” and press enter.
  3. For example, you would type “telnet 123.45.
  4. If a blank screen appears then the port is open, and the test is successful.
  5. If you receive a connecting… message or an error message then something is blocking that port.

Which command sends identification?

SMTP Commands

S.No. Keyword Description
1. HELO It provides the identification of the sender i.e. the host name.
2. MAIL It specifies the originator of the mail.
3. RCPT It specifies the recipient of mail.
4. DATA It specifies the beginning of the mail.

Which command is used to send identification?

SDI-12: Send Identification Command. 5.3 Send Identification Command (aI!)

How do I telnet?

How do I do a telnet test?

To perform the actual test, launch the Cmd prompt and type in the command telnet, followed by a space then the target computer name, followed by another space and then the port number. This should look like: telnet host_name port_number. Press Enter to perform the telnet.

How do I telnet to port 25?

How to run a Telnet test for the Port 25 & 110 or backup 2375 &…

  1. From Windows, Click START > Run.
  2. Type: telnet. – To see what is typed, enter: SET LOCALECHO.
  3. Enter in the telnet command in this format: open press Enter.

How do I Telnet from command prompt?

How to use telnet to test SMTP communication?


  • Using Telnet to test email (SMTP) If you are troubleshooting email connectivity and email reciept issues,it may be necessary to test basic SMTP communication for the problem that you
  • Commonly Seen SMTP Error Codes
  • How to send SMTP email using telnet?

    Open your command prompt.

  • Now,connect with telnet using the following command: telnet 25
  • Type ehlo
  • Type mail from: [email protected]: mail from: [email protected]
  • Type rcpt to: [email protected],[email protected] (replace with your actual recipient name): rcpt to: [email protected],[email protected]
  • How to use telnet command in command prompt?

    – Windows OS with administrator privileges – Access to the command prompt – An address and port to test

    How to enable telnet server in Windows 10?

    Right-click the Start button and select Programs and Features .

  • Click Turn Windows features on or off from the left-hand menu.
  • The Windows Features dialog box appears. Scroll down and select Telnet Client. Click OK .
  • The Telnet Client installations begins.
  • Once complete,a success message appears.
  • Click Close. There’s no need to restart your computer.