SMTP Error Code: 354 4.7.2

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Lookup for "354 4.7.2"

Temporary Error - This status code indicates a transient issue and may resolve itself.

Basic Status Code Details (354)

Start mail input; end with .

Enhanced Status Code Details (4.7.2)

Mailing list expansion prohibited

The sender is not authorized to send a message to the intended mailing list. This is useful only as a permanent error.