On 30 Dec 2015, at 3:00, Nick Edwards wrote:

Hey there,
In my final hours (34) at job X before moving back home to Australia
to start job Y next week, I  would love to solve an issue I've been
seeing for a few weeks now, some domains in eval are wrongfully
hitting.

Take postfix.org for example, it has no A record, so this check should
return NXDOMAIN and therefore not score the mail with a positive
value.

Not exactly. It returns NOERROR but with 0 answers. The name has records, just not A (or CNAME) records. That is NOT the same as NXDOMAIN, which means there are no records for the name.

If the check_uridnsbl code actually checks for NXDOMAIN specifically rather than checking for a positive number of answers, that would be a bug.

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