Setting e-mail addressing and name resolution options
You can set the e-mail addressing and name resolution options to specify where you want ACT! to look to validate e-mail addresses and names when addressing an e-mail message.
To set e-mail addressing and name resolution options
From the Tools menu, click Preferences.
Click the E-mail tab, and then click Composing Options.
In the E-mail addressing and name resolution box, select one or both of the search in options. Press F1 for field definitions.
If you selected both options, then in the Search first in the box, select the item that ACT! should search first.
Click OK.