Diagnosis
The message was processed successfully in the SAP system and transferred to the connected system. However, it was not possible to get information about the delivery to the recipient because the send status data that was returned had errors or was incomplete. It is not possible to tell from this data whether the message was delivered or not.
Technical Information
SMTP-HOSTNAME.COM:25
Resolution
Refer to SAP 2494754 – XS899 – “No information on delivery, status invalid”
- First, depending on the release of the affected system, please ensure the notes from the “See Also” section are implemented in the system.
- The main cause of this issue is an invalid response coming back from the mail server to the SAP system, the first thing to check here is the response coming back to SAP system.
- The response can be checked in the SAPconnect trace and/or in the ICM trace.
- Recreate the issue and capture the Level 3 ICM trace as per “2351619 – How to take SMICM trace?”. The SAPconnect trace can also be checked for errors but in most cases it does not show enough information, please review “1639935 – How to capture the SAPconnect trace”.
- Once the trace is captured, search for term SMTP and check around each entry, you will find an error which is related to the issue. At this error check the warning which will give more information, then depending on this entry take the relevant action. It maybe that the cause of the issue is seen as a server reply, this will also be visible in the trace.
- If the error found is “ERROR => NiHLGetNodeAddr: NiPGetHostByName failed (rc=-1)” and the warning “WARNING => Connection request from (*) to host: HOSTNAME, service: PORT failed (NIEHOST_UNKNOWN)” then ensure that the Hostname can se resolved to a IP address, please review notes “129997 – Hostname and IP address lookup” and “124562 – Hostname resolution problems (DNS timeouts)”. Also ensure the Port number is correct.
- If error is “ERROR => NiBufIConnect: non-buffered connect pending after *ms” and warning “WARNING => Connection request from (78/79/0) to host: HOSTNAME, service: PORT failed (NIECONN_REFUSED)” then the server is refusing the connection request from SAP system. Please contact the server administrator to check why server is refusing the connection. No action is required within the SAP system.
