Reporting-MTA: dns; dostup.org.ua
X-Postfix-Queue-ID: E9AB23140797
X-Postfix-Sender: rfc822; xxxxxxxxxxxxxxxxxxxxxxxxx@xxxxxx.xxx.xx
Arrival-Date: Mon,  5 Oct 2026 17:54:24 +0300 (EEST)

Final-Recipient: rfc822; xxxxxx@xxxxxxx.xxxxxxx.xx
Original-Recipient: rfc822;xxxxxx@xxxxxxx.xxxxxxx.xx
Action: failed
Status: 5.1.1
Remote-MTA: dns; relay.citynet.kharkov.ua
Diagnostic-Code: smtp; 550 5.1.1 <xxxxxx@xxxxxxx.xxxxxxx.xx>: Recipient address
    rejected: User unknown