EXEC msdb.dbo.sp_send_dbmail  
    	        @profile_name = 'InfoSystem'
	      , @recipients ='test@привет.рф'
	      , @subject = 'test'
	      , @body = 'tets'
	      , @body_format='HTML'

The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 1 (2020-02-12T12:37:09). Exception Message: Cannot send mails to mail server. (A recipient must be specified.).
)

recipients 	body	send_request_date	sent_status
test@привет.рф	tets	2020-02-12 12:37:09.117	2

sent_status=2

The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 1 (2020-02-12T13:13:36). Exception Message: Cannot send mails to mail server. (A recipient must be specified.).