When you see header issues despite domain verification:
Authentication Check:
Verify all authentication methods (SPF, DKIM, and DMARC) are passing.
Check Return-Path alignment with From domain.
Ensure DKIM signatures are valid and using correct selectors.
Common Issues:
Mismatched sending domains.
Incorrect authentication record implementation.
Missing or incorrect DKIM keys.
Sending configuration issues in your Email account.
For specific header issues, check your Email dashboard or contact Email support with the full headers for detailed analysis.
