[Dovecot] POP3 how do I either retrieve spam or never put mail in spam?

I retrieve my mail from dovecot over POP3. Sometimes dovecot delivers a message into the spam mailbox, even though I have no spam filtering enabled. I can't find anything in the wiki about "other" mailboxes and POP3. I want to either never deliver mail in any mailbox other than my default inbox, or be able to retrieve mail over POP3 from those other mailboxes. How do I do them?

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TonyN.:' mailto:tonynelson@georgeanelson.com ' http://www.georgeanelson.com/