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Man Pages


Manual Reference Pages  -  SPMFILTER-CLAMAV (1)

NAME

spmfilter-clamav - spmfilter ClamAV-plugin

CONTENTS

SYNOPSIS

[clamav]

DESCRIPTION

clamav is a plugin for spmfilter that enables spmfilter to check mails with the Clam AntiVirus open source toolkit for viruses. The major goal of this plugin is to provide an easy way for virus-scanning emails. If ClamAV detects malicious software like viruses the affected email is discarded by the plugin. Optionally notifications can be enabled to inform the recipients and sender (configurable) about the discarded message. Activation of the module is done by adding clamav to the modules-variable with the [global]-section in spmfilter.conf like follows:

[global]
...
modules = clamav
...

Please note that ClamAV needs to listen on a TCP/IP-socket instead of a local socket to interact with the spmfilter clamav-plugin. This is achieved by replacing the option "LocalSocket" with "TCPSocket" and "TCPAddr" in clamd.conf

OPTIONS

Configuration of the spmfilter clamav-plugin is done by adding a new section for clamav to spmfilter.conf

[clamav]
host = 127.0.0.1
port = 3310
max_scan_size = 2097152
notification = 0
notification_template = /path/to/clamav-template.txt
notification_sender = postmaster@example.com
notification_subject = Virus detected
add_header = true
header_name = X-Spmfilter-Virus-Scanned
scan_direction = 0

host IP-address of the ClamAV-daemon. This option is mandatory.

port Port on which the ClamAV-daemon listens. This parameter is optional, port 3310 is used as default if the port is not defined.

max_scan_size Files larger than this limit won’t be scanned, defined in bytes. This parameter is optional, 5MB is used as default if max_scan_size is not defined.

notification Enables or disables notifications of recipient if virus detected. Possible values: 0 (notification disabled), 1 (notify recipient), 2 (notify sender and recipient). If the smtp-engine of spmfilter is used, envelope-addresses are used for notification. Otherwise if the message was delivered to spmfilter by the pipe-engine all address are extracted from the header. Default: 0 (notification disabled).

notification_template Absolute path to the notification template. If you want to inform your users within templates about which malicious software has been found by ClamAV, you can use the ’%virus%’ expansion which will be replaced by the full name of the virus detected. Also there is a ’%sender%’ expansion which you can use within your templates to inform the recipient about the origin sender. This parameter is mandatory if notification != 0.

notification_sender Define sender address for notifications. This parameter is mandatory if notification != 0

notification_subject Subject String for notification messages. This parameter is optional, the string "Virus notification" is used as default if unspecified.

add_header Add header for scanned message. Possible values: true (add header), false (don’t add header). Default is "false".

header_name Define X-header-name for scanned messages. This parameter is optional, "X-Spmfilter-Virus-Scanned" is used as default if unspecified.

scan_direction Define direction to scan. Possible values: 0 (scan incoming and outgoing mail), 1 (scan incoming mails only), 2 (scan outgoing mails only). This parameter is optional, 0 is used as default if unspecified (scan incoming and outgoing mails). Lookup-backend required for option 1 or 2.

reject_virus If true, infected messages will be rejected by spmfilter.

reject_msg Define optional reject message.

SEE ALSO

spmfilter.conf(5), spmfilter(3)

AUTHOR(S)

spmfilter-clamav was written by Axel Steiner <ast@treibsand.com>

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SPMFILTER-CLAMAV (1) 31. March 2010

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