What is a Distributed Denial of Service (DDoS) Attack?
A Distributed Denial of Service (DDoS) attack is a malicious attempt to disrupt the normal traffic of a targeted server, service, or network by overwhelming the target or its surrounding infrastructure with a flood of Internet traffic. In the context of email marketing, a DDoS attack can severely impact the delivery and effectiveness of your email campaigns by making your email servers unavailable to legitimate users.