The job of this computer is to exchange information with other systems to ensure that your mail works 24 hours a day. These computers are called server computers.

A properly dedicated server machine is housed in an air-conditioned server room guarded by an armed security guard, the continuous provision of which is also aided by high-performance aggregators. These machines are connected directly to the BIX (internet) backbone network so that data can be exchanged from all over the world without any problems.