Hi,
Since the new version, 1.8.14, in every sync of the contacts and the calendar/appointments - my host based firewall prompts that a process named dllhost.exe is trying to access an IP address of 52.109.76.6 to port 443 TPC, hence HTTPS.
Accessing https://52.109.76.6/ shows that its digital certificate is for config.officeapps.live.com.
My MS Outlook version is 2016.
Any idea why this happens?