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Subject: Mail delivery failed: returning message to sender
Message-Id: <E1utguT-0008MT-RP@mail.lnwhostname.com>
Date: Wed, 03 Sep 2025 13:23:57 +0700

--1756880637-eximdsn-2072950640
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This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  gamingbliat6@gmail.com
    host gmail-smtp-in.l.google.com [172.217.194.26]
    SMTP error from remote mail server after pipelined end of data:
    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 [mail.lnwhostname.com] with ip:
    [122.155.167.50] = 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-b4cd3e4195fsi9489487a12.1241 - gsmtp

--1756880637-eximdsn-2072950640
Content-type: message/delivery-status

Reporting-MTA: dns; mail.lnwhostname.com

Action: failed
Final-Recipient: rfc822;gamingbliat6@gmail.com
Status: 5.0.0
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 [mail.lnwhostname.com] with ip: [122.155.167.50] = 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-b4cd3e4195fsi9489487a12.1241 - gsmtp

--1756880637-eximdsn-2072950640
Content-type: message/rfc822

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Subject: Sending fine 4749219
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Date: Wed, 03 Sep 2025 13:23:54 +0700

A Test Message From #4749219

--1756880637-eximdsn-2072950640--
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