Returned mail: see transcript for details

The original message was received at Mon, 9 Jun 2025 09:59:56 +1200 from m0288863.ppops.net [127.0.0.1]
----- The following addresses had permanent fatal errors ----- boston.doughygardne@otamatea.school.nz (reason: 550-5.1.1 The email account that you tried to reach does not exist. Please try)
----- Transcript of session follows ----- ... while talking to aspmx.l.google.com.:
DATA
<<< 550-5.1.1 The email account that you tried to reach does not exist. Please try <<< 550-5.1.1 double-checking the recipient's email address for typos or <<< 550-5.1.1 unnecessary spaces. For more information, go to <<< 550 5.1.1 https://support.google.com/mail/?p=NoSuchUser 00721157ae682-710f9a4649dsi53076867b3.408 - gsmtp 550 5.1.1 boston.doughygardne@otamatea.school.nz... User unknown <<< 503-5.5.1 RCPT first. A mail transaction protocol command was issued out of <<< 503-5.5.1 sequence. For more information, go to <<< 503-5.5.1 https://support.google.com/a/answer/3221692 and review RFC 5321 <<< 503 5.5.1 specifications. 00721157ae682-710f9a4649dsi53076867b3.408 - gsmtp
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