2日前くらいからsa-updateでエラーが出るようになってた。。。

どうもperl 5.10に上げる必要があるようです。
https://issues.apache.org/SpamAssassin/show_bug.cgi?id=7108

config: invalid regexp for rule __PDS_FROM_2_EMAILS: /^\W+([\w+.-]+\@[\w.-]+\.\w\w++)(?:[^\n\w<]{0,80})?<(?!\1)[^\n\s]*\@/i: Nested quantifiers in regex; marked by <-- HERE in m/(?i)^\W+([\w+.-]+\@[\w.-]+\.\w\w++ <-- HERE )(?:[^\n\w<]{0,80})?<(?!\1)[^\n\s]*\@/

channel: lint check of update failed, channel failed

他のアプリもあるので、とりあえずsa-update だけ perl-5.10 を利用するよう修正しておきました。

# wget http://www.cpan.org/src/5.0/perl-5.10.1.tar.g
# tar zxvf perl-5.10.1.tar.g
# cd perl-5.10.1
# ./configure.gnu --prefix /usr/local/perl-5.10.1
# make
# make install

# /usr/local/perl-5.10.1/bin/perl -v

This is perl, v5.10.1 (*) built for x86_64-linux

Copyright 1987-2009, Larry Wall

Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl".  If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.

# /usr/local/perl-5.10.1/bin/cpan

cpan[1]> install Digest::HMAC
cpan[1]> install Net::DNS
cpan[1]> install NetAddr::IP
cpan[1]> install HTML::Tagset
cpan[1]> install HTML::Parser

# cp /usr/bin/sa-update /usr/bin/sa-update.org
# diff -u /usr/bin/sa-update.org /usr/bin/sa-update
--- /usr/bin/sa-update.org	2014-11-28 16:31:37.000000000 +0900
+++ /usr/bin/sa-update	2014-11-28 16:01:18.000000000 +0900
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -T -w
+#!/usr/local/perl-5.10.1/bin/perl -T -w
 
 eval 'exec /usr/bin/perl -T -w -S $0 ${1+"$@"}'
     if 0; # not running under some shell

# sa-update -v
Update finished, no fresh updates were available