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exim4



Hi,

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?

Second, I found there are spammers using dial-up connection (slow but
not blacklisted) to send junk emails. How to reject those junk emails?

Thank you very much.


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