Reporting-MTA: dns; dostup.org.ua
X-Postfix-Queue-ID: 7861B3140BE1
X-Postfix-Sender: rfc822; xxxxxxxxxxxxxxxxxxxxxxxx@xxxxxx.xxx.xx
Arrival-Date: Wed, 19 Aug 2026 21:50:03 +0300 (EEST)

Final-Recipient: rfc822; xxxxxxxxxxx@xxx.xxx.xx
Original-Recipient: rfc822;xxxxxxxxxxx@xxx.xxx.xx
Action: failed
Status: 5.0.0
Remote-MTA: dns; mail01.kmu.gov.ua
Diagnostic-Code: smtp; 553 #5.1.8 Domain of sender address
    <xxxxxxxxxxxxxxxxxxxxxxxx@xxxxxx.xxx.xx> does not exist