[CentOS] dealing with spoofing

Thu Sep 1 21:34:19 UTC 2011
Scott Silva <ssilva at sgvwater.com>

on 9/1/2011 1:14 PM Kenneth Porter spake the following:
> On Thursday, September 01, 2011 12:43 PM -0700 Scott Silva
> <ssilva at sgvwater.com>  wrote:
>
>> I get TONS of spam with legitimate DKIM signatures...
>
> DKIM and SPF do not stop you from getting spam. Their purpose is to keep
> you from getting joe-jobbed, by declaring to the world which mail really
> came from you. It protects email sources, not destinations.
>
> So you're getting "honest" spam that tells you that it really came from
> where it claims to have come from.
Yes... Hotmail and YAhoo let ANYONE sign up, and flood for a short time until 
they get cut off. Legitimate source, but still crap...