Either leave the configuration alone, and just let Outlook users see the Default Global Address List; or else, take the time to study, plan, and test before you implement custom Address Lists.Default Address Lists (See Screenshot right) Once you realize that there are a handful of built-in Address Lists, you soon realize that you could create your own Custom Address Lists.
NTM will produce a neat diagram of your network topology.
But that's just the start; Network Topology Mapper can create an inventory of the hardware and software of your machines and network devices.
This is the master list of all the Exchange 2010 objects, and the operating system won't let you mess with it.
Fortunately, there is a well respected work-around, create a new Global Address List, and then 'update' the mailbox. Solar Winds' Network Performance Monitor will help you discover what's happening on your network.
Furthermore, certain commands are ONLY available in the Shell, for example, new-Global Address List.
As a learning progression, by all means start with GUI Exchange Management Console, but note as each Wizard completes so it shows you the corresponding Power Shell commands.
This utility will also guide you through troubleshooting; the dashboard will indicate whether the root cause is a broken link, faulty equipment or resource overload.
What I like best is the way NPM suggests solutions to network problems.
Download a free trial of Solar Winds' Network Performance Monitor As an alternative to clicking in the Exchange Management CONSOLE, you could type commands in the Exchange Management SHELL.
Using cmdlets like those below will save you time, more so when you realize that every Exchange 2010 configuration task has a faster command-line equivalent.
Here is a free tool to monitor your Exchange Server.