Email signature protocol verifying sender authenticity and integrity.
Yahoo appears to reject forwarded emails due to authentication and header modification issues.
June 1 marks strict enforcement of Google and Yahoo email authentication requirements for senders.
Threat actors abused AppSheet to send phishing emails that passed DKIM and DMARC checks.
Mailchimp rejects emails due to DMARC p=reject, sending 100% non-authenticated despite DKIM setup.
DKIM, SPF, and DMARC form the foundation for secure email delivery and prevent spoofing.
Avoid sudden email spikes; warm up your server to maintain deliverability and domain reputation.
We’re hiring top experts to elevate email security and deliverability to the highest standard.
