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Edit File: 1788223303.M386929P3499468.ng-shost103.tenten.vn,S=7917,W=8073

Envelope-to: cpanel@lednhattao.com
Delivery-date: Tue, 01 Sep 2026 07:41:43 +0700
Date: Tue,  1 Sep 2026 07:40:59 +0700 (+07)
From: MAILER-DAEMON@rl-mx-gw-shost-han1.tenten.vn (Mail Delivery System)
Subject: Undelivered Mail Returned to Sender
To: cpanel@lednhattao.com
Auto-Submitted: auto-replied
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
	boundary="916B3183C48.1788223259/rl-mx-gw-shost-han1.tenten.vn"
Content-Transfer-Encoding: 7bit
Message-Id: <20260901004059.7DF68183E09@rl-mx-gw-shost-han1.tenten.vn>

This is a MIME-encapsulated message.

--916B3183C48.1788223259/rl-mx-gw-shost-han1.tenten.vn
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Content-Type: text/plain; charset=us-ascii

This is the mail system at host rl-mx-gw-shost-han1.tenten.vn.

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

<congtytangialong@gmail.com>: host gmail-smtp-in.l.google.com[64.233.189.26]
    said: 550-5.7.26 Your email has been blocked because the sender is
    unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate with
    either SPF or DKIM. 550-5.7.26  550-5.7.26  Authentication results:
    550-5.7.26  DKIM = did not pass 550-5.7.26  SPF [lednhattao.com] with ip:
    [150.95.116.136] = did not pass 550-5.7.26  550-5.7.26  For instructions on
    setting up authentication, go to 550 5.7.26
    https://support.google.com/mail/answer/81126#authentication
    41be03b00d2f7-cc1f36ecbf6si21933176a12.229 - gsmtp (in reply to end of DATA
    command)

--916B3183C48.1788223259/rl-mx-gw-shost-han1.tenten.vn
Content-Description: Delivery report
Content-Type: message/delivery-status

Reporting-MTA: dns; rl-mx-gw-shost-han1.tenten.vn
X-Postfix-Queue-ID: 916B3183C48
X-Postfix-Sender: rfc822; cpanel@lednhattao.com
Arrival-Date: Tue,  1 Sep 2026 07:40:56 +0700 (+07)

Final-Recipient: rfc822; congtytangialong@gmail.com
Original-Recipient: rfc822;congtytangialong@gmail.com
Action: failed
Status: 5.7.26
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.26 Your email has been blocked because the
    sender is unauthenticated. 550-5.7.26 Gmail requires all senders to
    authenticate with either SPF or DKIM. 550-5.7.26  550-5.7.26
    Authentication results: 550-5.7.26  DKIM = did not pass 550-5.7.26  SPF
    [lednhattao.com] with ip: [150.95.116.136] = did not pass 550-5.7.26
    550-5.7.26  For instructions on setting up authentication, go to 550 5.7.26
    https://support.google.com/mail/answer/81126#authentication
    41be03b00d2f7-cc1f36ecbf6si21933176a12.229 - gsmtp

--916B3183C48.1788223259/rl-mx-gw-shost-han1.tenten.vn
Content-Description: Undelivered Message Headers
Content-Type: text/rfc822-headers

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	by ng-shost103.tenten.vn with esmtpa (Exim 4.99.5)
	(envelope-from <cpanel@lednhattao.com>)
	id 1x1CYa-0000000EePV-2gbx
	for congtytangialong@gmail.com;
	Tue, 01 Sep 2026 07:40:56 +0700
Date: Tue, 01 Sep 2026 00:40:56 GMT
From: "cPanel on lednhattao.com" <__cpanel__service__auth__icontact__l3o2ahpzx7xahbiu@ng-shost103.tenten.vn>
Message-Id: <1788223256.5lsJa_wfPsFWaWCC@ng-shost103.tenten.vn>
Reply-To: "cPanel on lednhattao.com" <cpanel@lednhattao.com>
Subject: =?UTF-8?B?W2xlZG5oYXR0YW8uY29tXSBBIGZ1bGwgYmFja3VwIG9mIHRoZSBh?= =?UTF-8?B?Y2NvdW50IOKAnHlnc2UydTRuaHd6b+KAnSB3aXRoIHRoZSBwcmltYXJ5IGRv?= =?UTF-8?B?bWFpbiDigJxsZWRuaGF0dGFvLmNvbeKAnSBoYXMgY29tcGxldGVkLg==?=
To: <congtytangialong@gmail.com>
X-iContact_locale: en
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="mixed-Cpanel::Email::Object-3491737-1788223256-0.68283742688071"
X-From-Rewrite: rewritten was: [cpanel@lednhattao.com], actual sender is not the same system user

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