MxToolBox

The MX Lookup tool lists MX records for a domain in priority order by querying the domain's authoritative name server directly. This ensures that changes to MX Records are reflected instantly.

You can click Diagnostics to connect to the mail server, verify reverse DNS records, perform a simple Open Relay check, and measure response time performance. You can also check each MX record (IP Address) against 105 DNS-based blacklists.

The provided text does not specify pricing details for the MX Lookup tool. You may need to check the website or contact support for information on pricing.

You can contact support by opening a support ticket through the MxToolbox website. The toll-free phone number provided is (866)-698-6652.

MxToolbox provides free, fast, and accurate network diagnostic and lookup tools to help technology professionals diagnose and resolve infrastructure issues. The tools were originally internal projects shared with the community and continue to evolve.

To sign up, you need to provide your email address, name, password, telephone, company, and title. You can choose your role from options like Executive, System Administrator, Email Administrator, IT Manager, Marketing Manager, Small Business Owner, Consultant, or Other.