How To Obtaining the SMTP Header for a MAPI Message

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This article was previously published under Q178073

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SUMMARY

This article contains a sample function that allows you to access the SMTP header for a message received over the Internet.

MORE INFORMATION

The entire header is stored in the property PR_TRANSPORT_MESSAGE_HEADERS.

   //  GetHeader takes a LPMESSAGE and returns a CString containing
   //  the header for the message.

   CString GetHeader(LPMESSAGE poEnv)
   {
     CString      csHeader;
     HRESULT         hr;
     LPSPropValue   lpProps = NULL;

     // MAPI property creation flags
     const ULONG ulFlags = MAPI_BEST_ACCESS | MAPI_DEFERRED_ERRORS;

     hr = HrGetOneProp(poEnv,PR_TRANSPORT_MESSAGE_HEADERS,&lpProps);
     if (S_OK == hr)
    {
       csHeader = lpProps[0].Value.lpszA;
    }
    return csHeader;
   }