You have to add them one at a time, AFAIK. Look into third party antispam
stuff that works better (in my view) - try Spambayes (google it - it's
free).
In the future, when you post in here, it's best to include your
version/mode/SP level of Outlook (from Help | About).
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.