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.. _install-virus:
=============
Virus Scanner
=============
About virus scan support
========================
Cyrus can use an external virus scanner to check for infected mail. Currently,
only `ClamAV`_ is supported.
Infected mail can be reported on, or removed.
It is possible to use Cyrus's virus scanner support **without** a virus scanner,
by passing in an IMAP SEARCH string. Messages matching that string are treated
as infected.
For more information, see :cyrusman:`cyr_virusscan(8)`.
.. _ClamAV: https://www.clamav.net
Virus Scanner Configuration
===========================
General configuration
---------------------
Once the virus scanner has been installed, Cyrus must be recompiled: the
configure step will detect the presence of a supported virus library and
use it.
:cyrusman:`cyr_virusscan(8)` can be run manually, or configured to run
periodically by cron(8) via crontab(5) or your preferred method
(i.e. /etc/cron.hourly), or by :cyrusman:`master(8)` in the EVENTS{} section in
:cyrusman:`cyrus.conf(5)`.
ClamAV
------
Cyrus does not need any special configuration to work with `ClamAV`_:
once ClamAV is installed, compiling Cyrus will automatically detect and use
the ClamAV libraries.
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