Sucuri and DotFeed
Sites using the Sucuri service will need to whitelist the DotFeed server IP addresses to ensure the DotFeed connector can be accessed.
Please contact the Help Desk for the IP addresses that will need access to the DotFeed connector (exampldomain.com/dotfeed.aspx)
To reach the Help Desk start here; https://helpdesk.vortx.com
More information about whitelisting an IP address with Sucuri, here; https://kb.sucuri.net/firewall/Whitelist+and+Blacklist/whitelisting-IP