Nov 16 2014

How to install the telnet client in Windows 8 and 8.1

I’ve built a Ubuntu Server to backup my Home server data and needed to test a few ports to see if they are open. Windows 8 and 8.1 does not have the telnet client installed by default so I decided to post an article to show you how to enable it. Below are the steps involved and a video showing how to enable telnet.

  1. Open up the control panel.
  2. Click on Programs and Features.
  3. Click “Turn Windows Features on of Off” on the left in the Programs and Features window.
  4. Scroll down till you see “Telnet Client” and check the check box.
  5. The telnet client will now install.
  6. Windows needs to restart after the telnet client has been installed.
  7. Open the command prompt after Windows loaded and type telnet. You should now be able to use telnet.

Here’s a quick video I made for a step by step:

Dec 22 2010

How to send mail using Telnet (This is to test SMTP mail sending issues)

Open a Command Prompt and type the following to test sending mail using SMTP:
(This is used to test that SMTP is working and that port 25 is open.)


telnet mail.domain.ext 25
MAIL FROM: mail@domain.ext        (this  e-mail address should be the address from the domain that you are testing from)
RCPT TO: mail@otherdomain.ext
Subject:-type subject here- then press enter twice (these are needed to conform to RFC 882)
To tell the mail server that you have completed the message enter a single “.” on a line on it’s own.