mod_spamhaus on CentOS 5

Trying this module out on Centos 5 and Apache 2 to see how it goes (Debian install how-to here)

• yum install httpd-devel (if ‘which apxs’ shows nothing)
• wget http://www.mirrorservice.org/sites/download.sourceforge.net/pub/sourceforge/m/project/mo/mod-spamhaus/mod-spamhaus/0.7/mod-spamhaus-0.7.tar.gz
• ln -s /usr/sbin/apxs /usr/sbin/apxs2
• tar zxf mod_spamhaus*.tar.gz
• cd mod_spamhaus
• make
• make install
• touch /etc/httpd/mod_spamhaus.wl
• LoadModule spamhaus_module /usr/lib/httpd/modules/mod_spamhaus.so
  was automatically added to httpd.conf
• vi /etc/httpd/conf/httpd.conf
  

  {IfModule mod_spamhaus.c}
  MS_METHODS POST,PUT,OPTIONS,CONNECT
  MS_WhiteList /etc/httpd/mod_spamhaus.wl
  MS_CacheSize 256
  {/ifmodule}

  /etc/init.d/httpd restart

(change the curly braces in the quote above to angle brackets)

• After a while check the Apache error log e.g. grep spamhaus /var/log/httpd/error_log . You should see some rejected connections – mainly on contactus.php type pages.
  

  [Fri Oct 16 03:41:08 2009] [crit] [client 111.222.222.111] mod_spamhaus: address 111.222.222.111.sbl-xbl.spamhaus.org is blacklisted. Deny connection to blogs.domain.tld/library/wp-comments-post.php, referer: http://blogs.domain.tld/library/library/path/to/anotherpost/
  [Fri Oct 16 03:52:44 2009] [crit] [client 222.111.111.222] mod_spamhaus: address 222.111.111.222.sbl-xbl.spamhaus.org is blacklisted. Deny connection to blogs.domain.tld/library/wp-comments-post.php, referer: http://blogs.domain.tld/library/path/to/mypost/

• I think it would be useful if there was the ability to add other/custom RBLs. The URL is listed as
  cfg->dnshost=”sbl-xbl.spamhaus.org”;
  in the source file mod_spamhaus.c so could be changed. Not sure if others can be added?