This is INN specific as I know little about other NNTP server software.

### innfeed.conf ### 
peer news.cmpublishers.com {
	ip-name:		news.cmpublishers.com
}

### incoming.conf ###
peer news.cmpublishers.com {
	hostname:		news.cmpublishers.com,cmpublishers.com
}

### newsfeeds ###
# Two examples depending on how you want to set up your end of the feed.

# Using our default-deny then allow mask.
# You won't waste as much bandwidth trying to send us groups that we don't carry.
# When we pick up aditional groups, this mask may change.
news.cmpublishers.com/news.cmpublishers.com\
	:!*,alt.*,cmu.misc.*,*cobalt.*,comp.*,\
	gname.*,linux.*,mailing.*,misc.*,mozilla.*,\
	news.*,openwatcom.*,perl.*,pnx.*,rec.*,sci.*,soc.*,spamcop.*,\
	talk.*,us.*,uk.*,\
	@local.*,@alt.dvd*,@alt.sex.*,\
	@*.bain*,@*dateien*,@*.bin,@bin[a.]*,@*.bin[aeir.]*,\
	@*.biana*,@*.biinaries*,\
	@unidata.*,@*warez*,@*.mp3*,\
	@*pict*,@*pedophil.*,@*.pedo*,!*.image*,\
	!alt.os.*,alt.os.linux.*,\
	!alt.fr.*,!alt.nl.*,!alt.pl.*,!alt.tv.*,\
	!junk\
	/!local:Tm,<262144:innfeed!

# Using our default-allow then deny mask.
# Set it and forget it.  However, you will waste bandwidth trying to send us 
# groups that we don't carry.
news.cmpublishers.com/news.cmpublishers.com\
	:*,@local.*,@alt.dvd*,@alt.sex.*,\
	@*.bain*,@*dateien*,@*.bin,@bin[a.]*,@*.bin[aeir.]*,\
	@*.biana*,@*.biinaries*,\
	@unidata.*,@*warez*,@*.mp3*,\
	@*pict*,@*pedophil.*,@*.pedo*,!*.image*,\
	!alt.os.*,alt.os.linux.*,\
	!alt.fr.*,!alt.nl.*,!alt.pl.*,!alt.tv.*,\
	!junk\
	/!local:Tm,<262144:innfeed!