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Because a temporarily failed SMPP MT submission is retried, it is considered a transient or temporary failure. Such a failure will be logged in the bounce log, as well as logged into main log through the default hook implementation of the SMPP log tempfail hook (smpp_log_tempfail). This hook is triggered in the same way as the SMPP log tempfail hook. The command_status from a remote response or a hook return value indicates that an SMPP MT submission has temporarily failed. The differences between an SMPP log tempfail hook and an SMPP Log Transient Bounce Hook are as follows:

  • the log destination (one is logged to the main log, the other to the bounce log)

  • the log format (as defined by the configuration).

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