On 2/11/2015 12:25 PM, Viktor Dukhovni wrote:
On Wed, Feb 11, 2015 at 06:20:32PM +0100, Frank Fiene wrote:

That DNS setup looks better, thx.

For a shared key for multiple services that use distinct protocols:

        _dane.mail.example.com.     IN TLSA 3 1 1 <sha256 SPKI digest>
        _25._tcp.mail.example.com.  IN CNAME _dane.mail.example.com.
        _110._tcp.mail.example.com. IN CNAME _dane.mail.example.com.
        _143._tcp.mail.example.com. IN CNAME _dane.mail.example.com.
        _587._tcp.mail.example.com. IN CNAME _dane.mail.example.com.
        _993._tcp.mail.example.com. IN CNAME _dane.mail.example.com.
Note, I am not aware of any IMAP, POP or SMTP submission client
software that uses DANE, so the records for ports other than 25
are largely pointless at present.

Just curious, you put the actual TLSA record first and then the CNAMEs. Any 
particular reason for the order?

--
John Allen<br />
KLaM<br />
------------------------------------------<br />
OK, so what is the speed of dark?

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