efaq: Newsgroup archives
2.4 Where can I get old postings to <news:gnu.emacs.help> and other GNU groups?
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The FSF has maintained archives of all of the GNU mailing lists for many
years, although there may be some unintentional gaps in coverage. The
archive can be browsed over the web at the GNU mail archive
(http://lists.gnu.org/archive/html/). Raw files can be downloaded from
<ftp://lists.gnu.org/>.
Web-based Usenet search services, such as Google
(http://groups.google.com/groups/dir?q=gnu&), also archive the ‘gnu.*’
groups.
You can also read the archives of the ‘gnu.*’ groups and post new
messages at Gmane (http://gmane.org/). Gmane is a service that presents
mailing lists as newsgroups (even those without a traditional
mail-to-news gateway).