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The SMPP Received Message Validation Hook utilizes Momentum's validate_data_spool_each_rcpt hook point to enable inspection of the incoming SMPP request and to do content validation such as running an anti-virus scan. This can be done for each recipient. This hook is invoked once during ec_message generation for each intended recipient. To implement this hook, implement the validate_data_spool_each_rcpt hook and put all the validation logic for an SMPP inbound message into a control block for SMPP protocol only as show in “Examples”. Logic outside of the protocol check block will affect all the incoming requests in other protocols.

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