Exchange Server was initially Microsoft's internal mail server. The first version of Exchange Server to be published outside Microsoft was Exchange Server 4.0. Exchange initially used the X.400 directory service but switched to Active Directory later. Versions 4.0 and 5.0 came bundled with an email client called Microsoft Exchange Client.
Definition of pareidolia in the English dictionary. The definition of pareidolia in the dictionary is the imagined perception of a pattern or meaning where it does not actually exist, as in considering the moon to have human features.
Psychologists say that some of us are more prone to facial pareidolia than others. But the good news for those who are prone to seeing little people in inanimate objects a sign of madness, it is in fact a sign of a well-wired brain.