identify the error code

What is a Bounce Code?

Bounce codes are specific error messages returned by the recipient's server. They can be either hard bounces (permanent issues) or soft bounces (temporary issues).
- Hard Bounce Codes: These indicate permanent delivery failures. Examples include:
- 550 5.1.1: Email address does not exist.
- 554 5.7.1: Email rejected due to content or policy issues.
- Soft Bounce Codes: These indicate temporary delivery issues. Examples include:
- 450 4.2.1: Mailbox full.
- 451 4.3.0: Temporary server issue.

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