What is the Default Value of Retry Attempts before a message will hard bounce?

The default value of retry attempts before a message will hard bounce is set at 30 retries. This means that when a message cannot be delivered to its intended recipient on the first attempt, the Secure Email Gateway will continue to attempt delivery up to 30 times over a specified period. If the message still cannot be delivered after these attempts, it will be classified as a hard bounce, indicating a permanent failure in delivery, typically due to reasons such as an invalid email address or a non-existent recipient email account.

Understanding this retry mechanism is crucial for email administrators, as it impacts email delivery rates and helps in diagnosing delivery issues. Implementing an adequate retry strategy allows for resilient communication, giving ample opportunity for transient issues (like temporary server unavailability) to be resolved before concluding that a delivery failure is permanent.