Detected and have disarmed KILLED tags

[NIkita]

 Please help,

I've installed new server CentOS 7, MailScanner 4.85.2, ClamAV, postfix, SpamAssassin.

Some of my colleagues start to receive messages  with text:
"MailScanner was attacked by a Denial Of Service attack, and has therefore deleted this part of the message."

In log file i've got:
" MailScanner [ 5525 ] : Content Checks : Detected and have disarmed KILLED tags in HTML message "

In "Removing dangerous content" section I've trued to switch of (setting to yes) , one by one, sections like IFrame, From, Script and etc. But nothing happens.

I hove you know how to fix it.

Best regards,
Me
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mailscanner.info/pipermail/mailscanner/attachments/20151202/fe46778b/attachment.html>