Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
How and where can I fix and add proper PTR Records in Cloudron?
@zion PTR records are only modifiable by your ISP. Cloudron has no control over that.
Ask your hosting provider to update the PTR record with your IP and hostname (FQDN of the server)
See this - https://docs.cloudron.io/email/#ptr-record