135
Very small news sites should consider a caching NNTP server program like leafnode, which is available at http://wpxx02.toxi.uni-wuerzburg.de/~krasel/leafnode.html.
136
This is indicated by the Date: header field; the limit is usually two weeks.
137
Threading 1,000 articles when talking to a loaded server could easily take around five minutes, which only the most dedicated Usenet addict would find acceptable.
138
The name apparently stands for NetNews Read& Post Daemon.
139
PGP and GPG are tools designed to authenticate or encrypt messages using public key techniques. GPG is the GNU free version of PGP. GPG may be found at http://www.gnupg.org/, and PGP may be found at http://www.pgp.com/.
140
Things improve drastically if the NNTP server does the threading itself and lets the client retrieve the threads databases; INN does this, for instance.
141
This is the reason why you will get ugly error messages when invoking tin as superuser. But you shouldn't do routine work as root, anyway.
142
Note that C News (described in Chapter 21, C News) doesn't update this low-water mark automatically; you have to run updatemin to do so.
143
Their order has to agree with that of the entries in the (binary) MASTER file.
