Email Security

Question 1

Mail gateway

Answer 1

is a server or service that acts as an intermediary for email messages sent and received within an organization or between different organizations

Question 2

SPF (Sender Policy Framework)

Answer 2

is an email authentication protocol designed to prevent email spoofing and ensure that incoming mail from a domain comes from a host authorized by that domain’s administrators. SPF helps reduce the risk of phishing attacks and improves the overall security of email communication

Question 3

DKIM (Domain Keys Identified Mail)

Answer 3

is an email authentication method designed to detect forged sender addresses in emails, commonly known as email spoofing. DKIM allows the sender to associate a domain name with an email message by using cryptographic signatures, which helps ensure that the email content has not been altered in transit

Question 4

DMARC (Domain-based Message Authentication)

Answer 4

is an email authentication protocol that builds on the existing SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) protocols to provide a mechanism for email senders and receivers to improve security and combat email spoofing and phishing attacks.