How do I stop Outlook Out-Of-Office from replying to certain addresses?

Solution 1:

To answer my own question, here's a rather convoluted solution I found on a forum, by Brian Tillman (MVP-Outlook):

How do I set up an exception rule in OOA to ignore certain messages?

Open the Assistant.
Click Add Rule.
Put the addresses you don't want receiving the OOA reply in the From feld.
Check "Do not process subsequent rules".
Click Advanced.
Check "Only items that do not match these conditions".
Click OK.
Specify whatever action you want. I usually choose "Alert with", click Action, uncheck "Notify with the text", check Play, and choose some sound, then click OK. Since the rule will fire when I'm not there and while Outlook is closed, the action will do nothing.
Click OK two more times to finalize all the dialogue boxes.

I've tried this out and it worked.