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Date:      Wed, 23 Mar 2016 15:09:35 -0700
From:      Kurt Buff <>
To:        Bernt Hansson <>
Cc:        Daniel Feenberg <>, Valeri Galtsev <>,  Olivier Nicole <>,  "" <>, Wayne Sierke <>, krad <>
Subject:   Re: [Phishing]Re: Anti-virus for FreeBSD
Message-ID:  <>
In-Reply-To: <>
References:  <> <> <> <> <> <>

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See also /usr/ports/security/maia and /usr/ports/mail/mimedefang.

I've used the first one to great effect, though we (unfortunately, to
my mind) replaced it with a Barracuda appliance which did basically
the same thing, and cost a lot more.

I tried implementing mimedefang, but staff complained bitterly about
their html-formatted emails being trashed.


On Wed, Mar 23, 2016 at 1:48 PM, Bernt Hansson <> wrote:
> On 2016-03-23 17:31, Daniel Feenberg wrote:
>> On Wed, 23 Mar 2016, Valeri Galtsev wrote:
>>> Partly to toss some more fuel into the fire ;-) and partly to discourage
>>> too harsh judgement of "some anti-vurus software not catching some
>>> viruses" (or should I say virii as a plural of Latin word virus?)
>>> First of all, the whole anti-virus approach is fundamentally flawed. In
>>> fact, you can not enumerate bad (what anti-virus is trying to do). You
>>> only can enumerate good and prohibit everything else. So, don't be too
>>> harsh on those [anti-viruses] that miss some of evil things sometimes:
>>> remember, they are trying to do the task that is fundamentally flawed.
>> Is there a package out there that would block all email messages with
>> binary executable content? I understand that pdf and word files may contain
>> executable code - the package would have to be able to distinguish such
>> files with executable code and those without. (Is that possible)?
>> For us, that would be a satisfactory substitute for Kaspersky, perhaps
>> even a superior one.
>> daniel feenberg
> Yes. There was a port called messagewall, where one could block attachments
> and html and other nasty stuff.
> Not in the ports any more.
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