SPF/DKIM
SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) are email authentication protocols used to prevent email spoofing and phishing. SPF allows domain owners to specify which mail servers are authorized to send emails on their behalf, while DKIM adds a digital signature to emails to verify their authenticity and integrity. Together, they help improve email deliverability and security by reducing spam and fraud.
Developers should learn SPF/DKIM when working on email systems, web applications that send transactional emails, or security-focused projects to ensure emails are not marked as spam. They are essential for compliance with email standards (e.g., DMARC), protecting domain reputation, and preventing unauthorized use of domains in phishing attacks. Use cases include setting up email servers, configuring email marketing tools, and enhancing cybersecurity measures.