Programming Tutorials

  If your automated transaction emails, newsletters, or direct business correspondence from cPanel are landing in spam folders or being bounced outright by Gmail and Yahoo, you are likely failing the strict sender requirements enforced in 2024. The era of "best effort" email delivery is over. Major Inbox Service Providers (ISPs) now require cryptographic proof of identity. If your domain lacks specific DNS records, your email is treated as spoofed traffic. This guide provides a rigorous technical implementation plan to authenticate cPanel-hosted email using SPF, DKIM, and DMARC, ensuring high deliverability rates. The Root Cause: Identity vs. Origin To fix email deliverability, you must understand how Gmail views an incoming message. SMTP (Simple Mail Transfer Protocol) is inherently insecure; by default, it allows anyone to write any address in the "From" field. When a cPanel server sends an email, it claims to be from  yourdomain.com . Gmail's servers immediat...