gnus-group-spam-classification-spam

gnus-group-spam-classification-spam is a variable defined in `gnus.el'.
Its value is

t

Documentation:
Spam group classification (requires spam.el).
This group contains spam messages. On summary entry, unread messages
will be marked as spam. On summary exit, the specified spam
processors will be invoked on spam-marked messages, then those
messages will be expired, so the spam processor will only see a
spam-marked message once.