DNS Configuration and Testing for SMTP Providers

I need a specialist to configure and verify DNS settings on my domain to ensure seamless integration with three SMTP providers: AWS, MailGun, and Brevo. The tasks include setting up SPF, DKIM, and DMARC records, ensuring all configurations are correct, and conducting thorough testing to confirm functionality across all providers. I am facing issues with domain verification due to incorrect DNS details. I need assistance in resolving this and ensuring proper configuration for AWS, MailGun, and Brevo.