SMTP Error Code: 221 2.1.3

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Lookup for "221 2.1.3"

This status code indicates a successful delivery or other operation. Any details are simply notes.

Basic Status Code Details (221)

Service closing transmission channel

Enhanced Status Code Details (2.1.3)

Bad destination mailbox address syntax

The destination address was syntactically invalid. This can apply to any field in the address. This code is only useful for permanent failures.