配置文件：newsfeeds

ME:!*::	
#  ^^ the exclamation mark is absolutely important, because without it everything will be send out to all feeds, 
#     also to the mailing lists (again: EVERYTHING) 
n2m!:!*:Tc,Ac,Wn*:/usr/lib/news/bin/news2mail	
#^^^ this entry only once 
# 
#the following entry only once per newsgroup, which should be send out via news2mail 
news-internal.list.linux.kernel@example.com:internal.list.linux.kernel/!mailpost:Tm,Ac:n2m!	
#^^sender email addresse for outgoing mails    ^^the newsgroup           ^        ^^ flags 
#                                                                        | this is the filter key; every articel which has 
#                                                                        | this key in his Distribution: header will not be mailed; 
#                                                                        | all news articles that will enter via mailpost 
#                                                                        | will have this key in the Distribution: header -> no loop! 

	`!*'部分非常重要，是加在其它 newsfeeds 项的前缀，否则所有的新闻组都要向外喂信。
	Tc 是 channel 方式，将文章送给外部程序 news2mail 处理；Ac 是禁止外送 Cancel 信件。
	`/mailpost'部分非常重要：防止在新闻组和邮件列表之间发生死循环，一旦信头PATH中包含 mailpost，就不进行喂信，因为该新闻原本来自于邮件。

配置文件：news2mail.cf

#one entry per newsgroup: 
news-internal.list.linux.kernel@example.com          linux-kernel@vger.kernel.org 
#^^ sender address                                      ^^ recipient addresse 
# it is important that the first field of both files is identical (sender)