Recently I had an error with a domain smtp server not recognising port 587.  To begin to test what was happening I wanted to get some key information about the server.  My tool of choice was the dig command.  Using the dig command: dig codebales.comUnderstanding a DNS look up results from Terminal using the dig command.  This command causes dig to look up the A record for the domain name codebales.com or whatever you enter. To do this dig starts by...