Please add Fastmail to the list of providers who do not support CAA records.
I requested the feature and got this replyon 2017-02-17 (from support@fastmail.com, ticket 2298656):
I checked this with our engineers and this what they mentioned:
Unfortunately our DNS server can't handle CAA records at the moment, but when we upgrade to the latest version it will be possible. I'm not sure when that is unfortunately, but I'll keep this in mind. No timeframes at the moment sorry.
I asked for an update and got this reply on 2020-06-26 (ticket 658313):
Thanks for reaching out to Fastmail support!
At this time, we do not support CAA records. Others have requested this, and I'm happy to report that we do have plans for this in the future. However, we're not able to offer any specific timeline as to when this could be implemented.
Please add Fastmail to the list of providers who do not support CAA records.
I requested the feature and got this replyon 2017-02-17 (from support@fastmail.com, ticket 2298656):
I asked for an update and got this reply on 2020-06-26 (ticket 658313):
Three years have passed and no action.