Sending mail from pdd yandex to gmail?

Question

gmail

Greetings.
Does not arrive (or arrives with a delay of 10-30 minutes) messages from pdd to gmail boxes.
And on other domains, like mail.ru, yandex.ru instantly.
It doesn't matter what you use to send: a web interface or an email client.
If you go to the original of the messages that came with a support, it will look like this:
One letter: February 11, 2019, 12:13 (delivered after 1418 seconds)
Second letter: February 11, 2019, 12:26 (delivered after 466 seconds)

Answer 1

OK, but where is the question?)
Well, the delay in delivery, what is the problem?