You suspect that a bad DNS server is causing your mail server to fail when sending outbound messages. Which of these Windows commands can tell you which DNS server you are currently using?
The answer: C) ipconfig
The Windows ipconfig utility can tell you a lot about your network configuration. When you use the /all flag you can see DNS information, as well as many other network configuration settings.
Want to know more? Watch “Network Troubleshooting Tools.”
There are many network troubleshooting tools available at the command line. In this video, you’ll learn how to use tools such as ping, tracert, nslookup, netstat, and many others.