We are using IPv6 in our infrastructure. Everything is working fine including Grafana. Only problem we are facing is unable to input IPv6 as SMTP server in Grafana.ini
We already tried with all the combination that works with IPv6.
ipv6:port
[ipv6]:port
“[ipv6]:port”
[ipv6:port]
etc…etc…
So from what I know, it should work by default. I did find this issue where it says same that with IPv4 send worked but not with IPv6 for the same server and then provided some tips.
If you can please test it out to see if that helps i.e. adding additional details in resolve.conf