Doesn't receive letters even mail-tester.com ...?

Moved to another hosting, copied all files , all full copy, everywhere where you have changed the IP , I decided to test sending emails. Letters will not reach even in the service mail-tester.com where to dig ?

The problem identified, the submission queue on the server for logging to the mail, gathered more than 10 tons of shipments...
June 5th 19 at 21:22

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