gnus: Finding the News
1.1 Finding the News
====================
First of all, you should know that there is a special buffer called
‘*Server*’ that lists all the servers Gnus knows about. You can press
‘^’ from the Group buffer to see it. In the Server buffer, you can
press ‘RET’ on a defined server to see all the groups it serves
(subscribed or not!). You can also add or delete servers, edit a
foreign server’s definition, agentize or de-agentize a server, and do
many other neat things. 
Server Buffer. Foreign Groups.
Agent Basics.
The ‘gnus-select-method’ variable says where Gnus should look for
news. This variable should be a list where the first element says “how”
and the second element says “where”. This method is your native method.
All groups not fetched with this method are secondary or foreign groups.
For instance, if the ‘news.somewhere.edu’ NNTP server is where you
want to get your daily dosage of news from, you’d say:
(setq gnus-select-method '(nntp "news.somewhere.edu"))
If you want to read directly from the local spool, say:
(setq gnus-select-method '(nnspool ""))
If you can use a local spool, you probably should, as it will almost
certainly be much faster. But do not use the local spool if your server
is running Leafnode (which is a simple, standalone private news server);
in this case, use ‘(nntp "localhost")’.
If this variable is not set, Gnus will take a look at the
‘NNTPSERVER’ environment variable. If that variable isn’t set, Gnus
will see whether ‘gnus-nntpserver-file’ (‘/etc/nntpserver’ by default)
has any opinions on the matter. If that fails as well, Gnus will try to
use the machine running Emacs as an NNTP server. That’s a long shot,
though.
However, if you use one NNTP server regularly and are just interested
in a couple of groups from a different server, you would be better
served by using the ‘B’ command in the group buffer. It will let you
have a look at what groups are available, and you can subscribe to any
of the groups you want to. This also makes ‘.newsrc’ maintenance much
tidier. Foreign Groups.
A slightly different approach to foreign groups is to set the
‘gnus-secondary-select-methods’ variable. The select methods listed in
this variable are in many ways just as native as the
‘gnus-select-method’ server. They will also be queried for active files
during startup (if that’s required), and new newsgroups that appear on
these servers will be subscribed (or not) just as native groups are.
For instance, if you use the ‘nnmbox’ back end to read your mail, you
would typically set this variable to
(setq gnus-secondary-select-methods '((nnmbox "")))
Info Catalog
gnus: Starting Up
gnus: The Server is Down