Resolve SPF/DKIM/DMARC Errors

My cPanel-hosted domain is being blocked by Gmail with a 550-5.7.26 “authentication required” bounce. I have full DNS-zone access and need an expert to diagnose and correct the records so every check passes.

Here are the exact protocols that must be fixed:

• SPF
• DKIM
• DMARC

Scope of work
• Audit current DNS entries in cPanel/WHM and at the registrar.
• Create or adjust the TXT/CNAME records for the items above, ensuring proper alignment.
• Propagate changes and run live tests (e.g., Google Postmaster Tools, MXToolbox) until Gmail accepts the messages.
• Provide a short hand-over note explaining what was changed and why.

Acceptance criteria
A test email from my domain must reach a Gmail inbox without errors, showing “pass” for SPF and DKIM and “none/quarantine/reject” handled correctly under DMARC, with no 550-5.7.26 bounce.

I’m ready to give immediate DNS access so the job can be completed quickly.