Hello,
Answers:
1. The guide you are looking for is SAP OPInt 1.0 SPS09, please ensure that you have HANA Server and Studio of Revision96/97 and you have installed SAP OPInt 1.0 SPS09 from the Service Marketplace. Please check the version of OPInt DU installed in your system. This SMTP configuration steps are for OPINT 1.0 SPS09
2. Its a key-value pair. Where SENDER_ADDRESS is the key and EMAIL_ADDRESS like do_not_reply@YOUR_DOMAIN is the value. The key could be of your choice.
Regards,
Archana