Hello Henry | Security Division,

Am 2011-02-23 11:24:27, hacktest Du folgendes herunter:
> I have a question. Is it possible to check with a Spamassassin rule
> for existing MX records of a sender domain and give points if the MX
> records exist or not exist?

The problem, is that a MX record is NOT required for a sending host.

So, if a server has a mailinterface and you will get a confirmation mail
or even a copy of the mail your spamassassin wil score it for rejection.

Thanks, Greetings and nice Day/Evening
    Michelle Konzack

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