Blocking emails with dangerous attachments
prandal at herefordshire.gov.uk
Tue Apr 5 11:01:21 IST 2011
Easiest way is to use MimeHeader SA plugin, and create rules to detect attachment names like UPS.ZIP (and all the variants you see) and score them highly.
Phil Randal | Infrastructure Engineer
NHS Herefordshire & Herefordshire Council | Deputy Chief Executive's Office | I.C.T. Services Division
Thorn Office Centre, Rotherwas, Hereford, HR2 6JT
Tel: 01432 260160
From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Richard Coombe
Sent: 05 April 2011 10:45
To: 'mailscanner at lists.mailscanner.info'
Subject: Blocking emails with dangerous attachments
We're blocking all incoming exe attachments. However we're getting some spam/virus email with exe attachments, ("Your DHL / UPS package is ready" type stuff). The exe gets removed and then the rest of the message is delivered with an attachment warning report. This is annoying my end users as they're not interested in the email in any way.
Is there a config setting to quarantine emails that have had their attachments stripped?
I can only find 'Deliver Cleaned Messages' in MailScanner.conf. However I also have emails from other legitimate mailing lists that have URLs in them which get 'disarmed' and I _do_ want to deliver these message. So I don't think I can change this to 'no', I think I need a more fine grained approach.
Am using Mailscanner with spamassassin and clamav.
IT Manager, Taff Housing Association
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