fail2ban just locked me out of our website because something from my desktop was hammering port 443 on the server (which is not in use).
I saw my IP also requesting
"GET /autodiscover/autodiscover.xml HTTP/1.1", so I assume that's what's going on on port 443 as well.
But I only have 1 email account configured in Outlook and it's working just fine.
The account is for the address
firstname.lastname@example.org and said server will answer for
example.com, but that server is not our MX and it is also not configured as an Exchange server in my mail account.
So, why is Outlook still trying to retrieve those auto-configuration settings?