[Mimedefang] New spammer trick?

[John Mason]

> -----Original Message-----
> From: mfaurot at atww.org [mailto:mfaurot at atww.org] 
> Sent: Wednesday, November 26, 2003 3:44 PM
> To: mimedefang at lists.roaringpenguin.com
> Subject: Re: [Mimedefang] New spammer trick?

<snip> 
 
> I suspect what's happening lately is not so much open relays 
> from these consumer dialup and broadband customers, but the 
> results of spamware viruses (e.g., Mimail).  I don't know the 
> specifics on how these viruses work, but I suspect they don't 
> answer connections on port 25/tcp like a real SMTP MTA would, 
> and thus probably wouldn't be seen by open relay scanners. 


But the ISPs are in a unique position to analyze traffic at the gateways and
deal with abusive traffic in a very precise fashion.
However many are not responsible enough to do this and thus leave others
outside their network to use less precise methods.


John Mason