Parse Failure Delivery Report Hard Bounce

flohogun2
61.25% (Friendly)
Member Topic Starter

8 years ago

Hello,

When we parse an email and got a Failure Delivery Report, if the type of repport is Failure Report, is it possible to know if the type is hard bounce (the email does not exist) or soft bounce (for exemple delay or blacklist)

Best regards

Florent

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ivan
100% (Exalted)
Administration

8 years ago

There is not a standard, but you can guess it by ErrDescription, if the description contains "mailbox", "user", it is likely a hard bounce, otherwise, it is a soft bounce.

flohogun2
61.25% (Friendly)
Member Topic Starter

8 years ago

Thank

Is it fiable to use SMTP codes like 5.1.1?

Best regards

florent

ivan
100% (Exalted)
Administration

8 years ago

Yes, you can refer to

https://www.ietf.org/rfc/rfc2821.txt

but not every SMTP server always returns the same error code.

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