Hi,
I'm using qmail toaster as a email gateway for our exchange server. If a
spammer sends a mail to a not existing email address on our domain the
mail is forwarded to the exchange server. The exchange server generates
a ndr and send it to the fake sender address. Is it possible to let
qmail check if the recipient exist on the exchange server or in a list
or something else before it accept the mail.
Thomas
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