Reading your email the following occurred to me.
I have a very old email address that I have not used actively for a number of years. You would think the only thing in there would be spam but surprisingly enough there are emails from legitimate services I also no longer use, like for example a very large supermarket whose online service I no longer use but who still send me advertising to this old address.
If you were to use the ip addresses of senders to this old service you may well inadvertently block IPs of legitimate services simply because a previous user of your email domain also stopped using the service
Just a thought.
Hill
Sent from my iPad
On 10 Jul 2011, at 19:55, Jeff Lasman <blists@???> wrote:
> On Sunday, July 10, 2011 11:30:09 am WJCarpenter wrote:
>
>> (I pay no attention to either of these cases except for occasionally
>> looking at the logs out of curiosity. They're both relatively small
>> compared to various other brute-force spam attempts and spam attempts
>> for active addresses.)
>
> I guess a few posters have missed my point when I wrote I was still accepting
> the email as an academic exercise. My whole point in keeping the domain live
> year over year is to see how much longer the spam keeps coming, as all the
> actual contact senders must have fallen off by now.
>
> I'm strongly considering automating taking all these IP#s and creating my own
> local DNS-based blocklist to run all company incoming email through, before
> checking other blocklists.
>
> Any opinions on that?
>
> Jeff
> --
> Jeff Lasman, Nobaloney Internet Services
> Post Office Box 52200, Riverside, CA 92517
> Our blists address used on lists is for list email only
> Phone +1 951 643-5345, or see: "http://www.nobaloney.net/contactus.html"
>
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