OT: How to defeat address harvesting; like this..???

[Nestor Burma]

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Hi,

--- DNSAdmin <dnsadmin at 1BIGTHINK.COM> a écrit :

> |Unknown users:
> |
> |   arnold@******.com
> |      from [222.233.140.203]    1 time(s).
> |
> |    bowen@******.com
> |      from [222.233.140.203]    1 time(s).
> |
> |    boyd@******.com
> |      from [222.233.140.203]    1 time(s).
> |
> This is a harvesting attack to determine valid
> usernames to compile a spam 
> list.

I would not say so. It looks like a dictionnary-based
sending of mail. They will try several bazillions
frequent (first, middle and last) names. The most part
will be rejected but a few may well get through. 
I do not think they test the SMTP error code to build
a spam list. They may do so, but I think it's
unlikely, except if they want to target YOUR domain
only (because your valid adresses may well be invalid
for my domain).

Hth,

-- Nb


	

	
		
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