How to make such a mark with yandex?

M

Maxim Maxim2018-02-15 17:14:00

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Maxim Maxim, 2018-02-15 17:14:00

In general, the subject, I want to open an online store and it’s very interesting how to make messages signed as in the screenshot below:

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2 answer(s)

D

Dim, 2018-02-15
@Dee3

DKIM and SPF set up as far as I remember

A

apollo2k4, 2018-02-15
@apollo2k4

I suspect DMARC does too.
There was information about this in the help for a long time.