Use SPF and DKIM authentication to prove that you are the legitimate sender and that the emails you send are from your domain.
SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) authentication are key protocols in email security . SPF allows domain owners to specify which servers are authorized to send emails on their behalf, reducing the chance of spoofing and phishing attacks. On the other hand, DKIM uses cryptography to digitally sign emails, ensuring that the content has not been altered in transit and providing a way to verify the authenticity of the sender.
Reverse DNS (rDNS) records
Ensuring your domain is associated with your IP address using PTR records.
Reverse DNS (rDNS) records are Domain Name System (DNS) bahamas number data records used to associate an IP address with a domain name. These records are essential for verifying the authenticity of an email server during message delivery.
Keep spam rates below 0.3%
Monitor and keep spam complaint rates low by using tools like Google's PostMaster Tools .
Avoid using free email addresses from Gmail, Yahoo, etc.
Follow Internet message format standards
Ensure that email headers, text, attachments, and content are formatted correctly according to standards.
6. Set up DMARC authentication for your domain
After you configure SPF and DKIM, set up DMARC authentication to indicate how emails that fail verifications should be treated.