I’m going to use mail for a domain from Yandex.
The problem is that Yandex does not see the MX-record for my domain within a month.
P.S. I noticed that Yandex requires a dot “.” at the end of his address “mx.yandex.nеt.”, but CloudFlare does not allow to put it.
This topic is related to mine, but the problem has not been solved:
I attached a screenshot from Yandex