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Skysnag MTA-STS record
Skysnag MTA-STS checker

MTA-STS checker

Email doesn’t inherit authentication. Without DMARC enforcement, any SMTP server can use your business domain name to send out email.

Check MTA-STS record


MTA-STS Generator

Did you know your emails might be getting sent without TLS encryption? Make TLS encryption a requirement for all emails using our free MTA-STS Record Generator tool to stop hackers from reading your messages. Create the record on your DNS and publish it to begin deploying MTA-STS!

What is MTA-STS?

It is an inbound mail protocol developed to increase the security and encryption between sending and receiving mail servers.

What is the objective of MTA-STS?

To make it more difficult for an attacker to have emails forwarded to a different destination.

How to implement MTA-STS?

Create the subdomain MTA-STS? Along with a directory named .well-known in the subdomain. Then upload the policy text file to the .well-known directory of the subdomain.