G Professional Collaboration Engineer Practice Exam

For enhanced security, which should be configured to authenticate outgoing emails?

1. Sender Policy Framework (SPF).

2. Domain Keys Identified Mail (DKIM).

3. Both SPF and DKIM.

4. Account activity logs.

The correct answer is: Both SPF and DKIM.

Configuring both Sender Policy Framework (SPF) and Domain Keys Identified Mail (DKIM) is essential for enhancing the security of outgoing emails. SPF works by allowing domain owners to specify which mail servers are authorized to send emails on behalf of their domain. This helps prevent spoofing and ensures that only legitimate servers are sending emails, reducing the risk of phishing attacks that utilize forged sender addresses. On the other hand, DKIM adds a layer of security by attaching a digital signature to each outgoing email. This signature is created using a private key, which is unique to the sending domain. When the recipient's mail server receives the email, it can verify the authenticity of the signature using the corresponding public key found in the sender's DNS records. This process ensures that the email has not been tampered with during transit and confirms that it genuinely originates from the stated sender. By implementing both SPF and DKIM, an organization can significantly improve its email security posture, providing robust defenses against various email-based attacks and ensuring that their communications are trustworthy and verifiable.