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Re: [dane] Delivery of email if MX is not signed

Viktor Dukhovni <ietf-dane@dukhovni.org> Sun, 23 August 2015 23:09 UTC

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Date: Sun, 23 Aug 2015 23:09:16 +0000
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
To: dane@ietf.org
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Subject: Re: [dane] Delivery of email if MX is not signed
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On Sun, Aug 23, 2015 at 02:18:39PM -0400, Paul Wouters wrote:

> >mail.example.com. IN A 192.168.1.1
> >_426._tcp.mail.example.om. IN TLSA ....

_25._tcp for SMTP, no idea where _426 is from.

> >What seems to have happened in the tests that Jan did was that IF the MX
> > was not signed, BUT the TLSA was signed and validated correctly, THEN
> > postfix did _NOT_ deliver the email. At all.

The tests were badly executed or profoundly misinterpreted.

> >I think that behaviour is wrong, and am unsure whether it is a bug in
> > postfix or whether it is a bug in the spec.

Neither.

> > That would be a bug in postfix? The spec states:

Would be, but is not, because Postfix does not behave as claimed.

-- 
	Viktor.

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