Returned mail: see transcript for details

[Mail Delivery Subsystem]

The original message was received at Wed, 26 May 2021 18:28:56 +0900
from [172.16.5.105]

   ----- The following addresses had permanent fatal errors -----
<200407271410.i6reamc30435 at mail02.joynet.co.jp>
    (reason: 553 5.3.5 system config error)

   ----- Transcript of session follows -----
553 5.3.5 [172.16.1.119] config error: mail loops back to me (MX problem?)
554 5.3.5 Local configuration error
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