On Thu, 6 Nov 2003 02:25:52 -0700, [EMAIL PROTECTED] (Bob Proulx) posted to
spamassassin-talk:
 > In a nutshell a not too common address got hit from one IP address,
 > then a few seconds later from another IP address, then a few seconds
 > later from a third IP address.  The first two were blocked with a 550
 > because of RBL entries.  The third IP address was finally accepted.
 > This really makes it look like spammers are building distributed
 > spamming engines across multiple IP addresses.  If a site rejects one
 > IP address it appears to switch to an alternate source?  Perhaps this
 > is a coincidence but it seems too much to be purely random chance.

It's been known for some time, although I have not seen it described
at this level of detail.

If you'd keep the rejected DATA around for a while, you could see that
it's the same guy, and immediately add the new IP address to your
local blocklist, and submit it to your DNSBL of preference.

/* era */

-- 
The email address era     the contact information   Just for kicks, imagine
at iki dot fi is heavily  link on my home page at   what it's like to get
spam filtered.  If you    <http://www.iki.fi/era/>  500 pieces of spam for
want to reach me, see     instead.                  each wanted message.



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