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igor_nko

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Hi,

There've been several incidents related to antivirus check of emails.
The anti-virus plug-in is always on and updates are run every four hours.
Screenshot of the parameters can be found attached.

But at the same time emails with attachments that contain viruses are sometimes not detected by the system and delivered to the user, where they are detected by local Antivirus - Nod.

In most cases, antivirus deals with virus detection, which can be seen in the server log.

How can I solve the problem related to partial oversight of viruses?


BR,
Igor

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[Updated on: Thu, 29 December 2016 17:26]

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Bud Durland

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This is somewhat unavoidable. No single AV solution is ever updated in time to catch 100% of new malware. Having multiple layers (server and endpoint) is the only practical way to address it, and even then it's not 100%. We actually have three layers, as we have an anti-spam appliance (SpamTitan) in front of our Kerio Connect server. SpamTitan has two Av programs (kaspersky and Clam), Kerio connect has Sophos, and our workstations have ESet, and we still get the occaisional message come through with embedded malware (usually in a .zip for or MS Office document).

All that said, end-user education is the final (and perhaps best) defense, although it is a challenge for those of us that have to manage it.
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