Any Telnet related testing methods, troubleshooting etc.
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. Open up the control panel. Click on Programs and Features. Click “Turn Windows Features on of Off” on the left in the Programs and Features window. Scroll down till you see “Telnet Client” and check the check box. The telnet client will now install. Windows needs…
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 HELO MAIL FROM: email@example.com (this e-mail address should be the address from the domain that you are testing from) RCPT TO: firstname.lastname@example.org DATA 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.