How do I stop Outlook from saving names of people I send email to

[Dave]

Evertime I send an email to someone, there address is in my suggested
complete listing. I want to only use suggested completion for contacts in my
contact list.

 

[Russ Valentine [MVP-Outlook]]

Then turn off autocompletion and use autoresolution instead.
http://home.indy.rr.com/russval/autocompletion.htm