Gee, I don't know.
I DO know that Outlook never creates a spam folder so you should probably ask the providers of your anti-spam solution how to fix this.

Signature
Milly Staples [MVP - Outlook]
Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.
After furious head scratching, ReidA asked:
| when my spam folder gets full, sometimes it will not let me delete
| mail. I have to go through the properties/security tabs to give
| 'owner' permission to delete? I have a perfect example in my deleted
| folder now. Why do I have to keep doing this?