On Fri, 2008-04-25 at 08:28 -0400, J. Little wrote:
> I have two questions.
> First, there are forged junk emails put return_path to me. I from time
> to time receive undelivered emails (i.e., no such user). How can I
> reject those undelivered emails?
Try this one:
> Second, I found there are spammers using dial-up connection (slow but
> not blacklisted) to send junk emails. How to reject those junk emails?
Some blacklists are actually doing nothing else *but* target dial up ip
> Thank you very much.
Hope this was of any use to you.
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