Mta Sts Checker
Use Mta Sts Checker on AboveTool to parse URLs, headers, DNS/WHOIS text, IPs, and certificates in your browser — free, private, no signup.
Mta Sts Checker
validates MTA-STS policy text for required version and mode fields
Runs in your browser. Live DNS/WHOIS registries are not queried unless a mode explicitly uses a public lookup API.
About Mta Sts Checker
Mta Sts Checker validates MTA-STS policy text for required version and mode fields. It works by checks version: STSv1, mode, max_age, and mx: patterns. Mode testing is safer while you roll out enforce. Mta Sts Checker runs free in your browser at abovetool.com — no signup, instant results.
How to use
- Enter the inputs for this network utility (two IPs, a single address, headers, PEM, and so on).
- Click Compare IPs, Lookup, Convert, or Run depending on the tool.
- Review the on-page result (including bit diffs or maps where shown), then copy or download.
Features
- Mode-specific forms for headers, URLs, IPs, DNS, and certificates
- Client-side parsers and builders — no upload required
- Copy or download results instantly
- Unique tool copy with practical tips for each utility
Frequently asked questions
What is Mta Sts Checker for?
Mta Sts Checker is validates MTA-STS policy text for required version and mode fields.
How does Mta Sts Checker calculate the result?
It calculates checks version: STSv1, mode, max_age, and mx: patterns.
Any tips for using this calculator?
Mode testing is safer while you roll out enforce.
Is Mta Sts Checker free on AboveTool?
Yes. Mta Sts Checker is free to use on abovetool.com with no account required, and results are calculated instantly in your browser.