
This is one of the essential troubleshooting tricks that an Exchange administrator needs to know, sending an email using Telnet from the command line. Let’s say you’ve just configured a relay connector and want to test it from the server that you wish to allow relay from before you let that server’s owner know that it is all set up for them. Or perhaps you want to quickly test whether a another email server on the internet is accepting mail from your network. For just about any scenario where you want to quickly test SMTP knowing this method is ...