3077487 - Error: "[403]: internal error: Cannot get remote source objects: Could not get tables (Communications link failure)" while testing remote source connection

• Trying to create a SDI Remote Source, see this Error:
  SAP DBTech JDBC: [403]: internal error: Cannot get remote source objects: Could not get tables
• Framework.trc shows:
  2021-07-08 12:44:19,061 [ERROR] JdbcMetadataBrowser | ExceptionUtil.newAdapterException - Failed to query schemas. org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure
  The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.)
  Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure
  Caused by: java.net.UnknownHostException: XXXXXXXX.XXXXXX.COM: Name or service not known
  at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
  at java.net.InetAddress$3.lookupAllHostAddr(InetAddress.java:977)
  at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1372)

SAP HANA Smart Data Integration

 DNS, Communications, getAddressesFromNameService   , KBA , HAN-DP-SDI , SAP HANA smart data integration (SDI) , Problem