InterNetX offers SPF, DKIM and DMARC to protect the email traffic. SPF (Sender Policy Framemwork) prevents the sender address of an e-mail from being forged. The domain holder enters in the DNS which mail transfer agents (MTAs) are authorized to send emails for this domain. DKIM (DomainKey Protocol) ensures the authenticity of email senders and helps to minimize spam and phishing. Finally, with DMARC, the email sender can also determine how the recipient handles an email that does not meet SPF and/or DKIM requirements. This ensures a consistent verification of the authenticity of the email.