Our goal is to make secure email better by making it:
- used in more places
- used more often
- used correctly
- always used when needed
As part of formal security policy, our Services can help you easily and inexpensively meet your regulatory requirements for email security. No need for expensive and complicated email gateway devices when simple test and verify will do.
We hope you find CheckTLS helpful, and we appreciate any feedback.
IP Addresses and Domains
CheckTLS connections are made to and from IP address 18.104.22.168 for customers who wish to allow our IP addresses through their firewalls.
CheckTLS contacts you and sends test results from email addresses in the @CheckTLS.com domain. You may wish to add CheckTLS.com to your email whitelist, especially since test results often look like SPAM to your computers.
3539 Holly Lane
Cincinnati, Ohio 45208
About the TLS Protocol
TLS (Transport Layer Security) and its predecessor SSL (Secure Sockets Layer) are cryptographic protocols that secure communications over networks such as the Internet. TLS and SSL encrypt the data sent over the network so it is unreadable by anyone but the two ends of the connection.
More information about TLS can be found at: