Sendmail: How does one blacklist annoying spammers?

[Ed Greshko]

On 06/28/2010 09:49 PM, Genes MailLists wrote:
>
>   SPF ... bah its silly. Here's another reason not to use it ... DKIM is
> much better. Not perfect but much better.
>   
Not advocating either one.  Just used that to indicate that *if* gmail
valued SPF and *if* their choice of SPF records hinted at what number of
servers they could call upon what that number could be.  (Note: I doubt
they value SPF since they did use ?all)
>   This is google trying to compact the SPF record - those netblocks are
> not all used for mail. If they didn't do this they would have very very
> very long SPF records .. lol.
>
>   Go after the hosts which actually send their mail outbound ... last I
> checked its in the 2,700 zone.
>   
One hopes they are contiguous and easy to list as the netblocks are in
the SPF records.

OK, I'll bite, how did you arrive at the number?
>   And no that's not a lot to whitelist at all ...
>
>   
But, you did say "last time you checked" which indicates maintenance is
needed.  Gmail being one of several lists you need to maintain.  It is
additive.  I suppose if you like to ensure work or job security you
could sell that to a PHB.  :-)


-- 
Hello... IRON CURTAIN? Send over a SAUSAGE PIZZA! World War III? No
thanks! 葛斯克 愛德華 / 台北市八德路四段

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