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An SMS MT message submitted by Mobile Momentum is treated as an inband message. When such a submission is failed permanently, it will be logged in the SMPP bounce log, as well as the SMPP mainlog through default hook implementation of the SMPP log permfail hook (smpp_log_permfail). This hook is triggered in the same way as the SMPP log permfail hook. The command_status from a remote response or a hook return value indicates that an SMS MT submission submission has permanently failed. The differences between the inband bounce and the permanent failure hooks are:

  • log destination (one to mainlog, one to bounce log)

  • log format (defined by the configuration)

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