This should work with any e-mail client, not just outlook.
The autolist should only show addresses that are actualy in your contact list.
Open your contact list.
Sellect the first contact that you no longer want to keep.
HOLD down the Ctrl key.
Click on the other contacts that you want to remove.
When all are sellected, release the Ctrl key.
Press the Delete key.
All sellected contacts will be removed from your list and should no longer show up in your autolist.
Be carefull. That action probably definitive: You probably can't go back.
Electro
February 2014