Denial of Service attack Messages Constantly
Steven Jardine
steve at mjnservices.com
Mon Aug 22 14:29:15 UTC 2016
I can confirm this behavior....the error code that I was getting was 13
which is a permission denied error. Unfortunately, it was happening too
often on legitimate mail that I had to turn off the feature.
I would really like to determine the cause....
On 08/22/2016 08:15 AM, Andy Southgate wrote:
>
> It still happens for me, AFAIK all that was worked out was that for
> some reason there is an intermittant permission problem that
> occasionally causes the spawned child process to fail to run causing
> that error on the message, but there was never any insight as to why
> that should be.
>
> *From:*MailScanner
> [mailto:mailscanner-bounces+andy=z00b.com at lists.mailscanner.info] *On
> Behalf Of *Aaron Pursell
> *Sent:* 22 August 2016 15:01
> *To:* mailscanner at lists.mailscanner.info
> *Subject:* Re: Denial of Service attack Messages Constantly
>
> I read pretty much every message and tried everything, most of those
> messages are years old and it appears it was fixed and now in the new
> version is the first time I'm experiencing them in many, many years,
> the fixes worked originally back in a way older versiona. Nothing
> really changed except the fact there's this new version, too bad it
> only happens to legitimate messages and not spam.... So who knows.
> I'll continue to look, the log really never says anything specific. I
>
> ---
>
>
>
> Regards,
>
> Aaron
>
>
> Message: 1
> Date: Fri, 19 Aug 2016 08:26:31 -0600
> From: Steven Jardine <steve at mjnservices.com
> <mailto:steve at mjnservices.com>>
> To: MailScanner Discussion <mailscanner at lists.mailscanner.info
> <mailto:mailscanner at lists.mailscanner.info>>
> Subject: Re: Denial of Service attack Messages Constantly
> Message-ID: <9dbfad5c-651a-3a7f-e9c8-2c623adf51c1 at mjnservices.com
> <mailto:9dbfad5c-651a-3a7f-e9c8-2c623adf51c1 at mjnservices.com>>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> I still haven't found a good solution to this even after trying all of
> the suggestions posted on the previous threads. If turn off "Dangerous
> Content Scanning" the error goes away but you lose that functionality.
>
> I have had to disable it until a solution can be found. Its not ideal.
>
> Good luck!
> Steve
>
> On 08/18/2016 04:43 PM, Mark Sapiro wrote:
>
> On 08/18/2016 08:49 AM, Aaron Pursell wrote:
>
>
> The problem is, my users and I keep getting messages like this:
>
> "
>
> MailScanner was attacked by a Denial Of Service attack, and has
> therefore deleted this part of the message. Please contact your e-mail
> providers for more information if you need it, giving them the whole
> of this report. Attack in:
> /var/spool/MailScanner/incoming/12835/78C9F481B0DA.ACDF4/nmsg-12835-2.html"
>
>
> The path doesn't exist when you look and the message never gets
> delivered. What can I turn off or adjust to make sure this doesn't
> happen?
>
>
> What's in the Mail log associated with this?
>
> There's a long thread on this with Subject: Denial Of Service Attack
> Messages in the archives of this list at
> <http://lists.mailscanner.info/pipermail/mailscanner/2016-May/thread.html>
> and
> <http://lists.mailscanner.info/pipermail/mailscanner/2016-June/thread.html>
> which may be helpful.
>
>
>
>
> IMPORTANT: This email does not constitute a contract or an offer or
> acceptance of an offer to enter into a contract. Further, this email
> may not be used to modify, supplement, novate, or waive any rights
> with respect to an existing contract or other binding commercial
> terms. MJN Services, Inc. conducts business under our service terms
> and conditions found at www.mjnservices.com
> <http://www.mjnservices.com> unless otherwise agreed to in writing by
> an officer of MJN Services, Inc.
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 19 Aug 2016 09:30:29 -0500
> From: Jerry Benton <jerry.benton at mailborder.com
> <mailto:jerry.benton at mailborder.com>>
> To: MailScanner Discussion <mailscanner at lists.mailscanner.info
> <mailto:mailscanner at lists.mailscanner.info>>
> Subject: Re: Denial of Service attack Messages Constantly
> Message-ID:
> <CAED3VzD1=fCW8a=t4V_xDX-d=3YX+QLZz2Xkwr05vFWSGMs48w at mail.gmail.com
> <mailto:CAED3VzD1=fCW8a=t4V_xDX-d=3YX+QLZz2Xkwr05vFWSGMs48w at mail.gmail.com>>
> Content-Type: text/plain; charset=UTF-8
>
> Steve,
>
> Can you zip the raw source of a message (the file) that triggers this
> and email it directly to me?
>
>
> -
> Jerry Benton
> www.mailborder.com <http://www.mailborder.com>
> +1 - 844-436-6245
>
>
> -----Original Message-----
> From:?Steven Jardine <steve at mjnservices.com
> <mailto:steve at mjnservices.com>>
> Reply:?MailScanner Discussion <mailscanner at lists.mailscanner.info
> <mailto:mailscanner at lists.mailscanner.info>>
> Date:?August 19, 2016 at 10:27:05 AM
> To:?MailScanner Discussion <mailscanner at lists.mailscanner.info
> <mailto:mailscanner at lists.mailscanner.info>>
> Subject:? Re: Denial of Service attack Messages Constantly
>
> I still haven't found a good solution to this even after trying all of
> the suggestions posted on the previous threads. If turn off "Dangerous
> Content Scanning" the error goes away but you lose that functionality.
>
> I have had to disable it until a solution can be found. Its not ideal.
>
> Good luck!
> Steve
>
> On 08/18/2016 04:43 PM, Mark Sapiro wrote:
>
> On 08/18/2016 08:49 AM, Aaron Pursell wrote:
>
>
> The problem is, my users and I keep getting messages like this:
>
> "
>
> MailScanner was attacked by a Denial Of Service attack, and has
> therefore deleted this part of the message. Please contact your e-mail
> providers for more information if you need it, giving them the whole
> of this report. Attack in:
> /var/spool/MailScanner/incoming/12835/78C9F481B0DA.ACDF4/nmsg-12835-2.html"
>
>
> The path doesn't exist when you look and the message never gets
> delivered. What can I turn off or adjust to make sure this doesn't
> happen?
>
>
> What's in the Mail log associated with this?
>
> There's a long thread on this with Subject: Denial Of Service Attack
> Messages in the archives of this list at
>
> and
>
> which may be helpful.
>
>
>
>
> IMPORTANT: This email does not constitute a contract or an offer
> or acceptance of an offer
> to enter into a contract. Further, this email may not be used to
> modify, supplement, novate,
> or waive any rights with respect to an existing contract or other
> binding commercial
> terms. MJN Services, Inc. conducts business under our service
> terms and conditions
> found at www.mjnservices.com <http://www.mjnservices.com> unless
> otherwise agreed to in writing by an officer of
> MJN Services, Inc.
>
>
>
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IMPORTANT: This email does not constitute a contract or an offer or acceptance of an offer to enter into a contract. Further, this email may not be used to modify, supplement, novate, or waive any rights with respect to an existing contract or other binding commercial terms. MJN Services, Inc. conducts business under our service terms and conditions found at www.mjnservices.com unless otherwise agreed to in writing by an officer of MJN Services, Inc.
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