SMTP Error Code: 221 5.3.5

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Lookup for "221 5.3.5"

Permanent Error - This status code indicates a permanent issue and is unlikely to resolve itself. You should contact the Email Service Provider.

Basic Status Code Details (221)

Service closing transmission channel

Enhanced Status Code Details (5.3.5)

System incorrectly configured

The system is not configured in a manner that will permit it to accept this message.