npub1wjwj5r9ytyhgg7nwmy75t8xrhphw6c8kq94fuv0qdjg6g0fruffq02ue5t (npub1wjw…ue5t) Hi Proton Mail, you have a small bug in the "custom domain name" procedure: The 3 CNAME records that clients add should be:
protonmail3.domainkey.(blah).domains.proton.ch
And instead they are:
protonmail3.domainkey.(blah).domains.proton.ch. (note the dot at the end)
Worth fixing for less experienced users who would then fail to update proper CNAME records!