Webmaster Forum / Perl / Modules / December 2004

Hi. I think I have currently got two versions of Net::DNS installed on
my system. Perl has always run fine on my system and I've never needed
to delve into its inner workings but I appear now to have some problems
(specifically, I have just upgraded spamassassin to 3.0.2 and am now
getting some unexpected error messages). Using linux, debian unstable.

Here's why I think something is wrong.

***

root@crackpot:~# perl -MCPAN -e shell
Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.7601)
ReadLine support available (try 'install Bundle::CPAN')

cpan> i Net::DNS
Strange distribution name [Net::DNS]
Module id = Net::DNS
   DESCRIPTION  Interface to the DNS resolver
   CPAN_USERID  CREIN (Chris Reinhardt <cpan@triv.org>)
   CPAN_VERSION 0.48
   CPAN_FILE    C/CR/CREIN/Net-DNS-0.48.tar.gz
   DSLI_STATUS  RmhO (released,mailing-list,hybrid,object-oriented)
   MANPAGE      Net::DNS - Perl interface to the DNS resolver
   INST_FILE    /usr/local/lib/perl/5.8.4/Net/DNS.pm
   INST_VERSION 0.48

cpan>

***

This seems (to me) to indicate that I have V0.48 of Net::DNS installed.
*But* running spamassassin V3.02 e.g. with

$ spamassassin -r < sample_spam.txt > spam.out

gives me errors of the form

Net::DNS version is 0.23, but need 0.34dnsavailable-1 at /usr/local/share/perl/5.8.4/Mail/SpamAssassin/Dns.pm line 1230.

I am a total novice now. Here are some things that might be helpful:

root@crackpot:~# locate Dns.pm
/root/.cpan/build/Mail-SpamAssassin-2.63/blib/lib/Mail/SpamAssassin/Dns.pm
/root/.cpan/build/Mail-SpamAssassin-2.63/lib/Mail/SpamAssassin/Dns.pm
/usr/local/Mail-SpamAssassin-2.63/lib/Mail/SpamAssassin/Dns.pm
/usr/local/Mail-SpamAssassin-3.0.2/blib/lib/Mail/SpamAssassin/Dns.pm
/usr/local/Mail-SpamAssassin-3.0.2/lib/Mail/SpamAssassin/Dns.pm
/usr/local/share/perl/5.8.3/Mail/SpamAssassin/Dns.pm
/usr/local/share/perl/5.8.4/Mail/SpamAssassin/Dns.pm
/usr/share/perl5/Mail/SpamAssassin/Dns.pm
root@crackpot:~#

(is that rather a lot of Dns.pm's?)

$ perl -V
[snip]
Characteristics of this binary (from libperl):
 Compile-time options: MULTIPLICITY USE_ITHREADS USE_LARGE_FILES PERL_IMPLICIT_CONTEXT
 Built under linux
 Compiled at Oct 25 2004 01:13:24
 @INC:
   /etc/perl
   /usr/local/lib/perl/5.8.4
   /usr/local/share/perl/5.8.4
   /usr/lib/perl5
   /usr/share/perl5
   /usr/lib/perl/5.8
   /usr/share/perl/5.8
   /usr/local/lib/site_perl
   /usr/local/lib/perl/5.8.3
   /usr/local/share/perl/5.8.3

Perl itself will have been installed via debian's apt-get. I installed
spamassassin via the tarball.

Any hints as to how to convince spamassassin (which was compiled and
installed after I installed Net::DNS 0.48) to use the right version?

Cheers,

Kevin