| Subject | French | English |
| comp., MS | notification d'échec | failure notification (A type of cache notification triggered when the cache client misses one or more cache notifications) |
| comp., MS | notification d'échec de remise | non-delivery report (A notification that an e-mail message was not delivered to the recipient) |
| comp., MS | notification d'échec de remise | NDR (A notification that an e-mail message was not delivered to the recipient) |