Level: Intermediate
Modern deliverability increasingly weighs domain-level reputation alongside, and sometimes above, IP-level reputation, which changes how sending infrastructure decisions should be made.
Domain Reputation Follows the Sending and From Domain
This reputation layer tracks the actual domain used in authentication and the visible From address, independent of which specific IP happened to send a given message.
IP Reputation Follows the Sending Server Specifically
This layer tracks the behavior of the sending IP address itself, which can be shared across multiple domains or dedicated to just one.
Both Matter, But Domain Reputation Has Grown More Influential
As dynamic and cloud-based sending infrastructure has made IP addresses less permanent, major providers have increasingly weighted domain-level signals more heavily in their filtering decisions.
Next step: Use the Domain Authority Checker to check your domain's current reputation signals separately from your sending IP's reputation.