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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:

  johnjallen@btinternet.com
    host mx.bt.prod.cloud.openwave.ai [65.20.50.207]
    SMTP error from remote mail server after pipelined MAIL FROM:<bluecool@bluecool.vn> SIZE=171832:
    522-email sent from 103.124.93.19 found on industry IP blocklists (Spamhaus/Invaluement/ReturnPath) on 2026/03/16 00:11:42 GMT
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 522 To protect our customers, we use leading industry providers of blacklists to ensure only good senders can send email to us. If believe this is a mistake, please contact them directly as there is nothing our Postmaster will be able to do.

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