Why is there a delay in the bounceback report for email addresses with incorrect addresses?
CloudStrong's Exchange replies to incorrect email addresses within a 30 minute period. If the email is handed over to another email server or a smart host provider these NDR or bounceback reports can take longer depending on how long these settings are set for.
This can be tested by attepmting to email [email protected]
The sender should receive a NDR within 30 minutes