Denial of Service attack Messages Constantly

Steven Jardine steve at
Fri Aug 19 14:26:31 UTC 2016

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!

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.

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