This error is a bit trickier to resolve only because there can be many different causes. No data connection – test your SMTP connection using telnet. If you are unsure how to do this, there is a good program: Exchange Server Fix Toolbox https://www.fixtoolbox.com/exchangeserverfix.html
Are you trying to setup your outlook email? Please provide more information on what you are trying to do with MS Exchange Server. Which OS is installed? Post reply back on this thread and we will see how we can resolve this error for you.
For me to better assist in troubleshooting, please click my DELL-username and send me a Private Message with the Dell Service Tag number and your Dell Order number. You would click my name in blue, then on the next page in the upper right corner, click the words "send private message"