Need AAAA records for ip6 server address for email deliverability

[marcusquinn]

I've been having issues with email deliverability to Google & Microsoft servers.

It seems that as well as now needing a PTR record for the ip6 on the host, we also need AAAA records for the subdomain (mail. in my case), to point to that same ip6 address (any DNS proxying disabled, too).

I only just learned of the ip6 option on the Network settings page. Perhaps there should be a warning when that's not set?

Probably something Cloudron DNS setup should be able to check and automate? @girish @nebulon

[joseph]

The ip6 ptr check was added in 8.2.4 . It should trigger a notification that it's not set along with the usual "Mail setup has issues" notification .