Using clamd / spamd instead of clamscan / spamassassin in ispconfig 2

Discussion in 'Tips/Tricks/Mods' started by Croydon, Jun 15, 2010.

  1. Croydon

    Croydon HowtoForge Supporter

    I know this topic has come up several times here, so I decided to make a little shell script as I needed this myself.

    The script below works for debian lenny with ispconfig 2 installed.
    I do not guarantee that this will work for you, use it at your own risk

    Code:
    #!/bin/sh
    apt-get -q -y install clamav-daemon spamassassin
    
    /etc/init.d/ispconfig_server stop
    /etc/init.d/postfix stop
    
    sed -i -r "s/^CLAMSCAN=.*/CLAMSCAN=\/usr\/bin\/clamdscan/" /home/admispconfig/ispconfig/tools/clamav/bin/clamassassin
    sed -i -r "s/^ScanMail .*/ScanMail true/" /etc/clamav/clamd.conf
    
    sed -i -r "s/^NotifyClamd (.*)/#NotifyClamd \1/" /etc/clamav/freshclam.conf
    echo "NotifyClamd /etc/clamav/clamd.conf" >> /etc/clamav/freshclam.conf
    
    sed -i -r "s/^NotifyClamd (.*)/#NotifyClamd \1/" /home/admispconfig/ispconfig/tools/clamav/etc/freshclam.conf
    echo "NotifyClamd /etc/clamav/clamd.conf" >> /home/admispconfig/ispconfig/tools/clamav/etc/freshclam.conf
    
    sed -i -r "s/^ENABLED=.*/ENABLED=1/" /etc/default/spamassassin
    sed -i -r "s/^CRON=.*/CRON=1/" /etc/default/spamassassin
    
    sed -i -r "s/\| .*\-\-prefs\-file.*/\| \/usr\/bin\/spamc/" /root/ispconfig/isp/conf/spamassassin.rc.master
    find /var/www/ -name ".spamassassin.rc" -exec sed -i -r "s/\| \/home\/admispc.*\/spamassassin.*/\| \/usr\/bin\/spamc/" {} \;
    
    
    /etc/init.d/spamassassin restart
    /etc/init.d/ispconfig_server restart
    /etc/init.d/postfix restart
    
    
    echo "Update done." ;
    
    
    What this script does:
    - Switches from clamscan bundled with ispc to clamd to reduce server load
    - Switches from spamassassin bundled with ispc to spamd/spamc
    - Enables daily sa-update cron
    - changes all existing user spamassassin config files to use spamc

    You should have the debian volatile project in your apt sources.list!
     
  2. thctlo

    thctlo New Member

    I would be great if this would be made default in ispconfig2 nexts update.
    less compiling, faster updates for debian.

    Thank you for the script.
     
  3. Croydon

    Croydon HowtoForge Supporter

    I just realized a problem with switching to spamd/spamc.

    All the SA user config files (like .user_prefs) are created by ispconfig as owner "root".
    As spamd/spamc changes the running user to the mailbox owner it is not able to write those config files or tmp/lock files into the .spamassassin directory.
    I don't know what further effects this could have (aside from writing lots of permission denied entries to the mail log).

    @falko/till: would it be possible to make ispconfig2 change the ownership of those files and the directory to the mailbox owner?
    This should not be a problem even if you don't use spamd/spamc.
     
  4. falko

    falko Super Moderator

    Yes, that should be possible. I've added it to our bugtracker.
     
  5. Spaetzle

    Spaetzle New Member

    As I have some problems with lots of clamscans too I am interested in that to.

    If I do the changes proposed by Croydon do I need to redo them after each upgrade of ISPConfig or are those changes untouched by a new Version?

    Wouldn't it be a good thing to build in a switch into ispconfig letting anybody choose what to use? clamd and spamd or clamscan and spamassassin.

    Best regards
    Bernd
     
  6. falko

    falko Super Moderator

    I think you need to redo them after an upgrade.
     
  7. Spaetzle

    Spaetzle New Member

    I used this hint now.
    It saved my day as my mashines where going down several times having loads of 100% and hundreds of clamscan processes running ...

    After changing to clamd/spamd I have not noticed any higher load any more.
    So kudos to Croydon.

    If there will be an upgrade to ISPconfig I think I only need to do the following steps:
    Code:
    /etc/init.d/ispconfig_server stop
    
    sed -i -r "s/\| .*\-\-prefs\-file.*/\| \/usr\/bin\/spamc/" /root/ispconfig/isp/conf/spamassassin.rc.master
    
    /etc/init.d/ispconfig_server restart
    
    Or do I need to do more. But I think an ISPCONFIG2 update only touches /root/ispconfig. Or am I wrong with that?

    Best regards

    Bernd
     
  8. falko

    falko Super Moderator

    It also modifies the /home/admispconfig directory.
     
  9. mini14

    mini14 New Member

    What would be the procedure to make this swap on a Centos box?

    I notice spamassassin taking up quite a bit of processor power at times.
     
  10. Croydon

    Croydon HowtoForge Supporter

    I had some thoughts about how I could change all the ownerships of the files in the mail user directory with one single command.

    So here comes the command - use it at your own risk.
    I don't think that it harms anything - but who knows ;)

    Code:
    find /var/www/ -user root -wholename "*/user/w*" -exec sh -c "(dirname {} | sed -r \"s/.*\/user\/(([^_]+)_[^\/]+)(\/.*)?/chown -v \1:\2 /\" ; echo {}) | xargs echo | xargs -0 sh -c "  \;
     
  11. Spaetzle

    Spaetzle New Member

    I think it will only work if you did not change the user prefix in ISPConfig admnistration.
    If you did you it must be something like
    Code:
    find /var/www/ -user root -wholename "*/user/[user_prefix]* ...
    Or am I wrong with that?

    Did some one already test this piece of code?

    Regards

    Bernd
     
  12. Croydon

    Croydon HowtoForge Supporter

    You are right. If you change the prefix you have to change the command.
    I tested the code on a default ispc install on debian lenny, it worked for me (as far as I can see).
     

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