Transferring a site from Yandex mail to a new hosting?

Question

Domain Name System

Hello. A very frightening situation for me, a beginner, has developed. Help please, like a teapot.
The point is. There is a site on hosting A.
There is a working Yandex mail.
MX SITE.RU DNS records are registered in the hosting settings . 10mx.yandex.ru.
TXT SITE.RU. v=spf1 redirect=_spf.yandex.ru

I want to transfer the site from hosting A to hosting B.
In fact, I transferred it. But the mail fell off.
Tell me, please, how can I make mail with old accounts work on hosting B?

Answer 1

I'm just an idiot .. I just had to register
MX SITE.RU on the new hosting. 10mx.yandex.ru.
TXT SITE.RU. v=spf1 redirect=_spf.yandex.ru
But I panicked because the mail stopped working. When I calmed down, I immediately understood what was the reason.

Answer 2

in fact, I moved it. But the mail fell off.

what do you mean fell off?
Obviously, in the DNS settings, register

MX SITE.RU. 10mx.yandex.ru.
TXT SITE.RU. v=spf1 redirect=_spf.yandex.ru

Answer 3

From the fact that you transferred the site to another hosting, the site domain has not changed, which means that you do not need to change the settings in the DNS.
The set of features available on the hosting may change. Check your site logs for errors.

Answer 4

When you change hosting, only the address of the server that is accessed for information changes. If mail was damaged during the change (does not open, no access) - try writing to Yandex technical support, most likely they can help.