On Tue, 25 Feb 2014, Viktor Dukhovni wrote:

smtp_dns_support_level = dnssec

was enough to fix this. I'll see how many servers will have a
"Verified" connection in the future.

I hope you read the note about the importance of having 127.0.0.1
and/or ::1 as the only nameservers listed in /etc/resolv.conf, and

No, did not read it, but this was obvious :-)

of course the local recursive resolver needs to be configured to
do DNSSEC validation.

Was much easier to do the positive test, than the negative one.

A note to others having the same problem: Resolving www.dnssec-failed.org (e.g. "dig www.dnssec-failed.org") should NOT result in a answer for the A record.

Ciao
--
http://www.dstoecker.eu/ (PGP key available)

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