Reporting-MTA: dns; d1282739
X-Postfix-Queue-ID: A73E3600EDB
X-Postfix-Sender: rfc822; xxxxxxxxxxxxxxxxxxxxxxxx@xxxxxx.xxx.xx
Arrival-Date: Thu,  9 Jul 2026 15:08:32 +0300 (EEST)

Final-Recipient: rfc822; xxxxxx@xxxxxxx.xxxxxxx.xx
Original-Recipient: rfc822;xxxxxx@xxxxxxx.xxxxxxx.xx
Action: failed
Status: 5.5.2
Remote-MTA: dns; relay.citynet.kharkov.ua
Diagnostic-Code: smtp; 504 5.5.2 <d1282739>: Helo command rejected: need
    fully-qualified hostname