To set up a mail domain within Yandex.Connect, do the following:
Configure the domain to work correctly with Yandex.Connect in one of the available ways:
Configuring domain records for Yandex.Connect operation
To maintain a domain on our NS and work with Yandex.Connect, do the following:
In chapter "Webmaster
»Click on your domain card:
provided in Yandex.Connect at the very bottom of the page that opens. Important!
After changing MX records, mail will stop arriving at mailboxes
hosted on our hosting.
the rest of the specified entries in the domain settings.
Wait for the update DNS cache
... This usually takes several hours (maximum 24).