[SOLVED] V0.50 MTA-STS policy is missing: STSFetchResult.NONE

Maintenance
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I had the same issue after setting up version v60.1. on Ubuntu 20.04 LTS with an external DNS. Solved it by:

  1. Create all the DNS-Entries as listed on your admin page in “System > External DNS”
  2. Go to “System > TLS (SSL) Certificates” and click the first big blue button “Provision”, which now generates the certificates for the new subdomains (autoconfig, autodiscover, mail, mta-sts.mail, mta-sts).
  3. Go back to “System > External DNS” which now lists two additional TXT entries for _mta-sts and _mta-sts.mail and enter those on your DNS server.

Alternatively you can just add two valid TXT entries right away (eg “v=STSv1; id=20230111T000000;”), to _mta-sts and _mta-sts.mail

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