Cyborg <[email protected]> (Mi 02 Aug 2017 15:40:28 CEST):
> > But isn't for sender verification
> >
> >     require verify = sender
> >
> > the better approach? (Of course, if you do not talk about sender
> > verification, then …)
> >
> 
> Nope, i don't wanne verify them, i just wanne drop messages from none
> existing domains.
> 
> Sender verification is the next step ;)

Then just skip this domain verification step and advance to sender
verification, because there is (as Jeremy and Mike wrote) more logic
involved, than just checking the "existence" of a domain.

If the domain does not exist (is not registred), sender verification
fails, as it does if there is no MX/A record for the domain.

    Best regards from Dresden/Germany
    Viele Grüße aus Dresden
    Heiko Schlittermann
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