If you are trying to install Spamassassin but get that error, then it means you require the HTML/Parser.pm perl module.
RedHat:
|
perl -MCPAN -eshell |
If that gives you problems, run "unset LANG" then try again.
FreeBSD:
|
cd /usr/ports/www/p5-HTML-Parser |
or to manually compile from source for either OS:
|
wget http://search.cpan.org/CPAN/authors/id/G/GA/GAAS/HTML-Parser-3.35.tar.gz |