I added MX records for my domain nearly 24 hours ago and for some reason they’ve not propagated anywhere according to dnschecker.org. I know that they can take 24-48 hours in some cases but I would’ve expected them to have propagated by now.
I’m having a similar situation as OP but I don’t understand this bit. When I try and change the “mail” to “@” it immediately reverts to “mail.” What am I doing wrong?