To integrate some more rules for Spamassassin we have to create two files and import three keys. First you can read these links if you want. I'll just show you the short way.
RuleUpdates Spamassassin Wiki
Openprotect.com
SpamAssassin Rules Emporium (SARE)
http://daryl.dostech.ca/sa-update/sare/sare-sa-update-howto.txt
First create an Directory /etc/spamassassin/sa-update-files and jump into it.
mkdir /etc/spamassassin/sa-update-files
cd /etc/spamassassin/sa-update-files
Then download the pub.gpg file from Openprotect.com and rename it.
wget http://saupdates.openprotect.com/pub.gpg -O saupdates.openprotect.com.pub.gpg
Import it into GPG and sa-update.
gpg --import saupdates.openprotect.com.pub.gpg
sa-update --import saupdates.openprotect.com.pub.gpg
Now download the pub.pgp from daryl.dostech.ca and import it too.
wget http://daryl.dostech.ca/sa-update/sare/GPG.KEY -O daryl.dostech.ca.pub.gpg
gpg --import daryl.dostech.ca.pub.gpg
sa-update --import daryl.dostech.ca.pub.gpg
Cause i can't remember where i got this file you will have to get it from here.
spamassassin.pub.pgp
wget http://open.nshare.de/wiki/_media/setup/spamassassin.pub.pgp
gpg --import spamassassin.pub.pgp
sa-update --import spamassassin.pub.pgp
Then you have to create a file sa-update-channels.chan with following content:
updates.spamassassin.org 70_sare_stocks.cf.sare.sa-update.dostech.net 70_sare_adult.cf.sare.sa-update.dostech.net 70_sare_spoof.cf.sare.sa-update.dostech.net 70_sare_bayes_poison_nxm.cf.sare.sa-update.dostech.net 70_sare_genlsubj_x30.cf.sare.sa-update.dostech.net 70_sare_oem.cf.sare.sa-update.dostech.net 70_sare_random.cf.sare.sa-update.dostech.net 70_sare_specific.cf.sare.sa-update.dostech.net 70_zmi_german.cf.zmi.sare.sa-update.dostech.net 70_sare_evilnum0.cf.sare.sa-update.dostech.net 70_sare_highrisk.cf.sare.sa-update.dostech.net 70_sare_header0.cf.sare.sa-update.dostech.net 70_sare_html0.cf.sare.sa-update.dostech.net 70_sare_obfu0.cf.sare.sa-update.dostech.net 70_sare_stocks.cf.sare.sa-update.dostech.net 70_sare_unsub.cf.sare.sa-update.dostech.net 70_sare_uri0.cf.sare.sa-update.dostech.net 70_sare_uri1.cf.sare.sa-update.dostech.net 70_sare_uri3.cf.sare.sa-update.dostech.net 70_sc_top200.cf.sare.sa-update.dostech.net 72_sare_bml_post25x.cf.sare.sa-update.dostech.net 99_sare_fraud_post25x.cf.sare.sa-update.dostech.net 88_FVGT_Bayes_Poison.cf.sare.sa-update.dostech.net 88_FVGT_Tripwire.cf.sare.sa-update.dostech.net 88_FVGT_rawbody.cf.sare.sa-update.dostech.net 88_FVGT_subject.cf.sare.sa-update.dostech.net saupdates.openprotect.com chickenpox.cf.sare.sa-update.dostech.net
And a file sa-update-keys.chan with:
856AA88A BDE9DC10 5244EC45
Finally you just have to run this command:
sa-update --channelfile sa-update-channels.chan --gpgkeyfile sa-update-keys.chan -D