2571203 - ERROR_SENDING_HTTP_REQUEST - UnknownHostException

HTTP_AAE Communication channel has message failing with following error:

MP: exception caught with cause com.sap.aii.adapter.http.api.HttpAdapterException: ERROR_SENDING_HTTP_REQUEST-Message Processing Failed. Reason : java.net.UnknownHostException: http://xyz.com

• SAP NetWeaver
• SAP Process Integration

Process Integration 7.0, PI 7.0, PI 7.01, PI 7.02, Process Integration 7.10, PI 7.10, Process Integration 7.11, PI 7.11, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.40, PI 7.40, PO 7.40, Process Orchestration 7.50, PI 7.50, PO 7.50, NetWeaver, XI, ERROR_SENDING_HTTP_REQUEST, HTTP_AAE, HttpAdapterException, java.net.UnknownHostException. , KBA , BC-XI-CON-AFW , J2EE Adapter Framework , BC-XI-CON-HTP , HTTP Adapter J2EE Adapter Engine , Problem