Reporting-MTA: dns; dostup.org.ua
X-Postfix-Queue-ID: 0CFA831407F4
X-Postfix-Sender: rfc822; xxxxxxxxxxxxxxxxxxxxxxxxx@xxxxxx.xxx.xx
Arrival-Date: Mon,  7 Sep 2026 22:10:19 +0300 (EEST)

Final-Recipient: rfc822; xxx@xxxxxx.xxx.xx
Original-Recipient: rfc822;xxx@xxxxxx.xxx.xx
Action: failed
Status: 4.7.1
Remote-MTA: dns; relay.kremen.gov.ua
Diagnostic-Code: smtp; 450 4.7.1 Client host rejected: cannot find your
    hostname, [178.20.154.100]