Tech Thought

Using “dig” you can determine what IP address or CNAME your domain is pointing to quite easily. However what I didn’t know was that you can actually check what the root server thinks your domain is pointing at, so you can check if its set correctly when you are migrating to a new IP address. [...]

More and more mail servers are starting to reject email if your outgoing mail server doesn’t have a reverse DNS record or PTR record. You can check if you have one by issuing the following command: dig -x 127.0.0.1 Obviously, replace the 127.0.0.1 address with the relevant IP address of your mail server. You should [...]