This is my first blog and would like to share an error and solution related to SOST. We were seeing error messages in SOST . Mails were sent from SAP but they were not received by the recipient. The indication was grey in SOST instead of green and error code was XS718. The information from system was recipient valid, delivery attempted as below
Go to SCOT and change from SAPconnect expects receipt confirmation for Internet mail to SAPconnect does not expects receipt confirmation for Internet mail as below. This fixed the issue and we were able to receive mails from SAP.