Reporting-MTA: dns; relay.mailchannels.net
X-Postfix-Queue-ID: 0C9B622283D
X-Postfix-Sender: rfc822; support@tservers4.com
Arrival-Date: Tue, 06 Jan 2026 14:30:10 +0000 (UTC)

Final-Recipient: rfc822; info@yuakm.com
Original-Recipient: rfc822;info@yuakm.com
Action: failed
Status: 4.0.0
Remote-MTA: dns; mail.yuakm.com
Diagnostic-Code: smtp; 421 Downstream server error
