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mcr4life13_at_aol.com; Failed; 5.3.0 (other or undefined mail system status)
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- SMTP protocol diagnostic: 521 5.2.1 : (CON:B1)
https://postmaster.aol.com/error-codes#554conb1
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Received on Tue May 30 2017 - 21:09:19 CEST