How to Test Your SPAM Filter

Sometimes as email administrators we need to test if the SPAM filter works and is filtering messages. In order to do this we need to send a test message with content that we are sure is rated as SPAM.

How to make a Loopback Cable

Sometimes in order to test a computer’s hardware or software we need a network link for the network adapter. The solution, very often, is to carry around a hub.
If you don’t want to carry around a hub, or you simply don’t have it, you can create a network loopback cable. The loopback cable will work as the computer was connected to a real network transmitting and receiving packets. This kind of setup allows the technician to troubleshoot hardware.