True or false: DKIM is one authentication method used to prevent spoofing.

DKIM, which stands for DomainKeys Identified Mail, is indeed an authentication method designed to help prevent email spoofing. It allows the sender to attach a digital signature to their emails, which is then verified by the receiving mail server to ensure that the message has not been altered in transit and that it indeed comes from the domain it claims to originate from. This verification is achieved through the use of public and private cryptographic keys.

By employing DKIM, organizations can establish a higher level of credibility for their outgoing messages. When an email is signed with DKIM, the recipient can check the signature against the public key published in the sender's DNS records. If the signature is verified, it confirms the authenticity of the email and helps in preventing malicious actors from spoofing the sender's domain to send fraudulent emails.

It’s important to note that while DKIM is effective for outbound emails, its primary purpose is to bolster the integrity and trustworthiness of email communications as a whole, not limited to marketing campaigns or only specific types of outbound emails. Therefore, the statement that DKIM is an authentication method used to prevent spoofing is true.