1792604328a:16:{s:3:"uid";i:67;s:7:"subject";s:35:"Undelivered Mail Returned to Sender";s:4:"from";a:1:{i:0;a:2:{s:5:"email";s:30:"MAILER-DAEMON@mailchannels.net";s:4:"name";s:20:"Mail Delivery System";}}s:2:"to";a:1:{i:0;a:2:{s:5:"email";s:18:"Contact@ht-bat.com";s:4:"name";N;}}s:4:"date";s:25:"2026-10-05T16:14:37+02:00";s:4:"seen";b:1;s:7:"flagged";b:0;s:8:"answered";b:0;s:2:"cc";a:0:{}s:8:"reply_to";a:1:{i:0;a:2:{s:5:"email";s:30:"MAILER-DAEMON@mailchannels.net";s:4:"name";s:20:"Mail Delivery System";}}s:10:"message_id";s:49:"20261005141437.053B0941130@relay.mailchannels.net";s:10:"references";N;s:4:"html";N;s:4:"text";s:797:"This is the mail system at host relay.mailchannels.net.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<leads@mendessolar.onmicrosoft.com>: host
    mendessolar.mail.protection.outlook.com[52.101.166.1] said: 451 4.4.4 
Mail
    received as unauthenticated, incoming to a recipient domain configured 
in a
    hosted tenant which has no mail-enabled subscriptions. ATTR5
    [PA2PEPF00019230.FRAP264.PROD.OUTLOOK.COM 2026-10-05T14:14:36.743Z
    08DF1C70C1276406] (in reply to RCPT TO command)";s:11:"attachments";a:2:{i:0;a:5:{s:5:"index";i:0;s:4:"name";s:11:"details.txt";s:4:"mime";s:10:"text/plain";s:4:"size";i:663;s:6:"inline";b:0;}i:1;a:5:{s:5:"index";i:1;s:4:"name";s:31:"Undelivered Message Headers.txt";s:4:"mime";s:14:"message/rfc822";s:4:"size";i:5938;s:6:"inline";b:0;}}s:15:"has_attachments";b:1;}