Is Maildir scanning recursive?

[Rick van Rein]

Hi,

I am a recent and happy adopter of bogofilter.  What an elegance of
simplicity and what an excellent speed!  And very good documentation :-)
but for this:

While training from Dovecot Maildir accounts, I was wondering if the
automated scans are performed recursively, and does that include
.INBOX.xxx?  That information impacts training, especially for the
.INBOX.spam subdirectory.

Thanks,
 -Rick