Use Search to quickly find a specific account on a domain. You can search by display name, first name, last name, first part of the mail address, alias, delivery address, or mailbox ID. If you search using a mailbox ID, the complete ID string must be entered in the search.
If you do not know the complete name, you can enter a partial name. Any accounts with that partial sequence in the name are displayed. For example, if you searched for Sam, the results could include Samuel, Samantha, Sammy, Samson.
From the drop-down arrow next to the search box, select Accounts. You can select to search in accounts, aliases, distribution lists, resources and domains, or all object types.
In the Search: box, type the name or partial name, the email address.
Click Search.
Accounts that match your search request are displayed in the content pane. The total number of search results found are listed in the bar next to the Next/Previous arrows.