Server Logs and What They Do

One of the best ways to monitor Linux and Unix servers is to study their server logs. Every operating system and Linux distribution has their own variants, but there are some general logs that most server OSes have. You should definitely be familiar with them if you plan to manage a dedicated server.
The following are […]

How to Fix an Open Relay

According to, an open relay is “a mail server that does not verify that it is authorised to send mail from the email address that a user is trying to send from. Therefore, users would be able to send email originating from any third-party email address they want.”
Using an open relay, someone could […]