[Dovecot] Extra inbox problem

[Stephen Allen]

One of my users (who uses Outlook) has lost all her folders that were 
inside her INBOX.  She collects her mail by IMAP.  I have confirmed that 
she has no folders in her INBOX.

However, if I use Pine, I can see a couple of extra folders, "INBOX." 
and "Junk Email." that I don't think should be there.  There already 
folders by that name but without the dot on the end. If I look in 
"INBOX." I can see the folders she's missing and the folder that they 
contain etc.

I backed up and moved the files listed under .maildir, and Dovecot 
recreated them, but it made no difference to the problem.

I don't understand why those extra folders appear in Pine, but not Outlook.

Kind regards,
Steve