Free Tool Diagrams your Domain
Here is a new killer app that every Windows’ admin should have in their toolbox.
Introducing the Microsoft Active Directory Topology Diagrammer (ADTD). It reads your AD structure and the automatically generates a Visio diagram of your AD/Exchange topology. Yes you read that correctly it is free and it is automatic.
I preach documentation like a broken record and here is a great way to document your AD topology without breaking a sweat.