I want to add a CNAME to my DNS to resolve www.spfweb.co.uk to spfweb.gitlab.io
In all good DNS documentation, it seems my www CNAME record should resolve to spfweb.gitlab.io. (i.e. with a trailing dot) [btw, I've not set this up yet...]
However... http://spfweb.gitlab.io/ is good and works, but http://spfweb.gitlab.io./ results in a 404
Would my CNAME record be wrong? (i.e. against good DNS advice, it would not end with a trailing dot to work), or is gitlab not checking hostname correctly? Indeed, if I make it resolve to spfweb.gitlab.io (without trailing dot), it actually resolves to spfweb.gitlab.io.spfweb.co.uk
If you look at other websites - even gitlab.com itself, http://gitlab.com./ works as expected.
So, whichever way one I use, it doesn't work: with trailing dot, gitlab returns 404. Without trailing dot, DNS is resolved incorrectly?!