Emails from mailboxes like info@malopopular.ru and come from mailboxes info@yandex.ru (info@mail.ru) do not come to the mail.
How did it happen:
There was mail for the domain from Google. Transferred the site to another hosting, and ns registered a Yandex domain:
dns1.yandex.net dns2.yandex.net In the management of dns, Yandex suggested copying the current settings of the DNS in which there were lines for Google Mail, I did so. The site earned a new hosting, mail earned. But the next day, the mail stopped working, and all the lines mentioning Google disappeared in the DNS settings.
In general, I entered from the documentation of the 3rd and last 5 lines. Mail worked, but there was a problem described in the first sentence.

What is the reason that letters do not come from some mailboxes?
Can blame other entries in dns and they need to be deleted?