spam trend - domains that don't exist?

[Ken A]

Curious if others are seeing this trend too.

Increasingly we are rejecting a lot of mail with just basic sendmail 
check_mail "domain does not exist" rule. What is the point of this kind 
of thing? Is this a new dumb virus? Why doesn't it make up an aol 
address? Is it about spam, or dns, perhaps.

Here's a small sample of the rejected domains:

> 
> tgnemnekyvrd at ip-14.bergon.net
> thc at jobs101_314630.cvc.adm.dcccd.edu
> tjredstart at jewelsplace.net
> tkiac at gtmpze.edu
> tmolar at merseymails.com
> tnjevdfwpp at DJJSZ6C1.nc.rr.com
> tocgpf at toshiba-user.hsd1.fl.comcast.net

They are mostly unique, and seem to be bots.

Ken

-- 
Ken Anderson
Pacific Internet - http://www.pacific.net