To detect spam when visiting a group, set the group's
parameters. These are accessible with G c or G p, as
usual (see Group Parameters).
You should set the
spam-use-* variables for whatever spam back
ends you intend to use. The reason is that when loading
spam.el, some conditional loading is done depending on what
spam-use-xyz variables you have set.
By default, only unseen articles are processed for spam. You can
force Gnus to recheck all messages in the group by setting the
If you use the
spam-autodetect method of checking for spam, you
can specify different spam detection methods for different groups.
For instance, the ‘ding’ group may have
the autodetection method, while the ‘suspect’ group may have the
enabled. Unlike with
spam-split, you don't have any control
over the sequence of checks, but this is probably unimportant.