When a website, mail server, or API runs on a VPS, it receives its own IP address — a unique numerical identifier on the network. For internet services, this address has its own reputation, similar to a company’s business reputation. IP reputation is formed based on the server’s behavior: what requests it sends, which services run on it, and whether spam, phishing, or other suspicious activity is detected from it. A poor IP reputation can result in emails not reaching recipients, websites being blocked by browsers, and external services refusing to work with it.
