FAQforge » ClamAV

How to disable spamfilter- and antivirus functions in ISPConfig 3

Till — Wed, 14 Jul 2010 12:52:27 +0000

If you use a mailserver wil very low ram (< 500 MB) and a slow CPU then it might be nescessary to disable the spam- and antivirus filter functions in ISPConfig 3 as amavisd and clamav might be too heavy for your server hardware. The steps to disable clamav and amavisd are:

Edit postfix main.cf file

vi /etc/postfix/main.cf

and comment out these lines by adding a “#” in front of them:

# content_filter = amavis:[127.0.0.1]:10024
# receive_override_options = no_address_mappings

Then restart postfix:

/etc/init.d/postfix restart

Now stop and disable the services. The following commands are for Debian and Ubuntu, the commands for other Linux distributions may vary

/etc/init.d/clamav-daemon stop
/etc/init.d/clamav-freshclam stop
/etc/init.d/amavis stop

update-rc.d -f clamav-daemon remove
update-rc.d -f clamav-freshclam remove
update-rc.d -f amavis remove

P The normal mail receive and send functions will still work after this modification. But please be aware that disabling amavisd and clamav will disable all spam- and antivirus filtering so that the spamfiltering options that can be configured in the ispconfig interface will have any effect on mail delivery and no spam and viruses will get filtered.

The changes in postfix main.cf will get overwitten by a ispconfig software update when you select to reconfigure services during upadte, so you should comment out the lines again after you install a ispconfig update.

How to solve the ClamAV error “This version of the ClamAV engine is outdated” on Debian 5.0 (Lenny)

Till — Fri, 16 Apr 2010 14:16:28 +0000

As of today, all ClamAV 0.94 or older installs will stop working. The Debian project has not released updates for their current stable release (5.0) yet to solve this, but there is a workaround. The Debain volatile project provides newer clamav versions. The installation steps to install ClamAV 0.95.3 on Debian lenny are:

1) Add the debian volatile repository to the sources list:

echo “deb http://volatile.debian.org/debian-volatile lenny/volatile main contrib non-free” >> /etc/apt/sources.list

2) Update the sources and install the new clamav package:

apt-get update
apt-get install clamav
apt-get -u upgrade

3) If you use amavisd-new (e.g. if you use a ISPConfig 3 server) then restart amavisd:

/etc/init.d/amavis restart

Which virus scanner is used by ISPConfig 2

Till — Tue, 28 Jul 2009 13:36:00 +0000

ISPConfig 2 uses ClamAV (http://www.clamav.net) as virus scanner and the E-mail Sanitizer (http://www.impsec.org/email-tools/procmail-security.html) as content filter.