Reporting-MTA: dns; fx21.security-mail.net
X-Postfix-Queue-ID: 4A1A14F8A281
X-Postfix-Sender: rfc822; xxxxxxxxxxxxxxxxxxxxxxxxxxx@xxxxxx.xx
Arrival-Date: Wed, 14 Oct 2026 00:10:30 +0200 (CEST)

Final-Recipient: rfc822; xxx@xxxxxxxxxxx.xx
Original-Recipient: rfc822;xxx@xxxxxxxxxxx.xx
Action: failed
Status: 5.1.1
Remote-MTA: dns; zproxy.u-bourgogne.fr
Diagnostic-Code: smtp; 550 5.1.1 <xxx@xxxxxxxxxxx.xx>: Recipient address
    rejected: User unknown in virtual mailbox table