> How can I ban a person a moment that post 20 posts continuously, thanks

Hi,

You cannot ban users automatically, but you can limit the number of posts
(optionally inclusive of cross posts) a user can make in a 1 hour period.

This is done by setting
    spam_stop true
in dnews.conf

And using the setting
     spam_from_hits 20
to limit the user to 20 posts per hour.

spam_from_cross can be used if you wish to count cross posts, but the limit
should probably be set somewhat higher - some clients are capable of
matching messages (and watching/igoring) across multiple groups, so cross
posting is preferable to many single posts.

This page details the use of these and other anti-spam settings.
http://www.netwinsite.com/dnews/spam.htm

- Roydon L.



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