[BlueOnyx:18200] New 'Spoofed DNS' spam problem.

[DD]

Hi all,

 

I'm seeing an increase in spam recently. Looking at the headers I see things
like:

 

Received: from 8290.domain.com (10.61.122.28) by domain.com (10.0.0.171)
with Microsoft SMTP Server id OTSXF87P; Wed, 19 Aug 2015 13:51:43 -0600

 

The numerical subdomain looks to change with every email so I'm guessing
they've set up a wildcard DNS entry.

 

Is there any way to reject this kind of spam? I have AV-SPAM v5 installed,
version 0.98.4.

 

Regards,

 

 

 

Dick

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.blueonyx.it/pipermail/blueonyx/attachments/20150820/0572ed4b/attachment.html>