A tool often forgotten by Exchange admins/consultants is the Microsoft Active Directory Topology Mapper. This tool reads an Active Directory (AD) configuration using LDAP and automatically generates a Visio diagram of the AD and/or Exchange Server topology. The diagrams may include domains, sites, servers, organizational units, DFS-R, administrative groups, routing groups and connectors. Another great thing about this tool is that we can then manually update the Visio diagrams to our liking once they have been created. Definitely a great tool to create a detailed diagram of an environment, especially one that we do not know much about.