How do I tell Outlook that an item is NOT spam?

[Guest]

Outlook 2000, apparently randomly, designates some of my personal mail as
spam, and puts it in my delete folder. Mail from a given sender is not
always handled this way. How can I tell Outlook that mail from this sender
is not spam/junk? Sometimes it puts one copy in my inbox and another copy in
the delete folder.

 

[Lanwench [MVP - Exchange]]

Outlook 2000, apparently randomly, designates some of my personal
mail as spam, and puts it in my delete folder. Mail from a given
sender is not always handled this way. How can I tell Outlook that
mail from this sender is not spam/junk? Sometimes it puts one copy
in my inbox and another copy in the delete folder.

Outlook 2000 doesn't have a built-in junkmail filter. Are you using rules?
Third party spam software?