mta-sts

Hosts the MTA-STS policy for infosecadvisers.com on GitHub Pages, served at:

https://mta-sts.infosecadvisers.com/.well-known/mta-sts.txt

Based on the template at https://github.com/jimeh/mta-sts-on-github-pages.

DNS records (in Route 53)

• CNAME at mta-sts.infosecadvisers.com → arkadiyg.github.io.
• TXT at _mta-sts.infosecadvisers.com → v=STSv1; id=<YYYYMMDDhhmmss> (bump the id every time the policy file changes)

Changing the policy

Edit .well-known/mta-sts.txt, then bump the id in the _mta-sts TXT record. Move mode: testing → mode: enforce only after TLS-RPT reports confirm clean delivery.