Mail delivery failed: returning message to sender

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Wed Apr 12 12:24:06 GMT 2023


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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:

  gccadmin@gcc.gnu.org
    host smtp.mailchannels.net [52.25.229.114]
    SMTP error from remote mail server after end of data:
    550 5.7.1 [STF] Sending too fast. [12,12,12]


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