Message attempted to kill MailScanner

DobriL Dobrilov dobril at
Thu Oct 4 12:11:20 UTC 2018



This is the error message which MailScanner show in debug mode, after that immediately quit.



Wide character in subroutine entry at /usr/local/share/perl/5.24.1/MIME/ lin 616

From: MailScanner [ at] On Behalf Of Shawn Iverson via MailScanner
Sent: Wednesday, October 3, 2018 6:04 PM
To: mailscanner at
Cc: Shawn Iverson <iversons at>
Subject: Re: Message attempted to kill MailScanner




Enable Debug=yes in MailScanner.conf


Empty all queues

Stop MailScanner daemons


Submit the suspect message to mta using appropriate mta tool


Run /usr/sbin/MailScanner, let it try to process the message, and capture all output and the output in /var/log/maillog


You can process winmail.dat yourself using the tnef binary utility on your server.


On Wed, Oct 3, 2018 at 4:54 AM DobriL Dobrilov <dobril at <mailto:dobril at> > wrote:



I just received error notification from MailScanner.


Other Bad Content Detected –

Report: MailScanner: Message attempted to kill MailScanner



Then I try to review the mail from archive. Temporary bypass scanning and deliver to my box. The mail contain another attached email which contain attached email too which  finally contain JPG image.

I try to forward to myself this time I get: 

The following e-mails were found to have: Other Bad Content Detected - 


The question is how I can debug those email and to find what exactly cause the issue.

Possible reasons for me are: 

-       Bad character in the subject  because the Subject is 

“Subject: =?UTF-8?Q?Fw:_Fwd:_Re:_?=




-       TNEF just cannot process attached email. From this perspective how I can extract winmail.dat from the message and to process it manually with TNEF.


MailScanner mailing list
mailscanner at <mailto:mailscanner at>



Shawn Iverson, CETL

Director of Technology

Rush County Schools

765-932-3901 x1171

iversons at <mailto:iversons at> 


  <>   <> 


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the MailScanner mailing list