Clarify duration of extra DNS records
@@ -67,6 +67,11 @@ You can also host your documentation from your own domain.
Some older setups configured a CNAME record pointing to ``<organization-slug>.users.readthedocs.com``.
These domains will continue to resolve.
+ .. note::
+
+ You will need to keep the extra DNS records after the setup is complete.
+ If you remove the validation CNAME, the certificate won't renew next year,
+ and if you remove the CNAME pointing to us, your domain won't serve the documentation.
Strict Transport Security
+++++++++++++++++++++++++
