Why did emails stop coming to Gmail?

Question

gmail

Hello!

Faced the problem of sending emails from VPS.
Previously, letters successfully left and were delivered to several mailboxes.

The last few days the letters go away, there are no errors, but they do not come to Gmail in NEITHER INBOX OR SPAM.
Letters from Yandex came to mail and come successfully.
Only Yandex is not interesting at all, it is important that they come to Gmail.

As if Google is ignoring emails from this domain.

Add. information

1. Domain : apelsin-plus.com.ua
   
2. Mail sender: [email protected]
   

Please, tell me what could be the problem and how to solve it?

Answer 1

You can start with the fact that the apelsin-plus.com.ua domain does not have an MX record, which can be regarded by Google as a service potentially created for mailing lists.

Answer 2

The log from the mail server would not hurt, all sorts of spf, dmarc dkim ptr records. I didn’t receive it without them, and if it did, it went to spam. Apparently, you don't have mx records on your domain, it's a pity the screenshot didn't load

Answer 3

I see an mx record for the Ukrainian service, Google can’t accept it at all without their mx record