On Tue, Aug 27, 2024 at 12:57:03AM -0400, Mike via dane-users wrote:

> I've tried to follow this thread.
> 
> I have one question...
> 
> Is there a site i can visit to tell me whether or not my TLSA and/or other
> cert DNS entries are OK with the new certs?

The DANE survey (https://stats.dnssec-tools.org/explore) shows a
detailed breakdown of the DNSSEC/DANE status of directly delegated (from
a TLD or similar registry, not internal within an organisation)
DNSSEC-signed domains.  However, the data is not "real-time", domains
are checked once a day, presently some time between 16:00 and 22:00 UTC.
So if you make changes, the survey may not show you the current state.

For a real-time check you can perform yourself, use the "danesmtp" bash
function, described at:

    
https://list.sys4.de/hyperkitty/list/[email protected]/thread/NKDBQABSTAAWLTHSZKC7P3HALF7VE5QY/

All you need is OpenSSL 1.1.1 or later and a bash-compatible shell.

Another real-time option is https://dane.sys4.de, but the results are
noticeably more basic (simple) than from the survey.  The results are
cached, but you can request a refresh (every ~5 minutes, IIRC).

Checks are also possible via:

    * https://www.huque.com/bin/danecheck

        Not a domain check, you have to explicitly check a particular MX
        host, and specify port 25.

        Don't forget to choose the "SMTP" radio button under "STARTTLS
        Application"

    * https://internet.nl/test-mail/

        But some of their criteria are too strict (pedantic).

There are others, measurement and analysis quality varies...

-- 
    Viktor.

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