If you are a Domino on-prem customers or consultant I will suggest you to follow this nice webinar organized by IBM Support team for August 9th 2017 11:00 AM EDT (15:00 UTC/GMT, UTC-4 hours) for 60 minutes.
This session will provide recommended best practices on how to
control spam and spoofed messages with IBM Domino. Throughout the event,
attendees will also be encouraged to comment or ask questions in the
WebEx Meetings chat.
Following this link you will be find all details, telephone numbers and links to join this free webinar. and the slides will be added at same link after the webinar
This will be the link to access the Jump session using the browser:
Web conference password: webcast