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MTA-STS SMTP TLS

What you see when your domain has this problem
MTA-STS Policy MX Does not support TLS Details area Ignore
Add mta-sts monitor for 85.105.73.200

More Information About Mta-Sts Smtp Tls

This error indicates that the recipient MTA-STS policy MX does not support TLS. MTAs supporting an MTA-STS policy MUST have support for TLS 1.2 or higher, otherwise encryption will fail.

MxToolbox Delivery Center

This is one problem. Inbox providers check every layer.

Gmail, Yahoo! and Outlook check your email at several layers before it reaches the inbox. Delivery Center monitors and manages every one of them, so you find and fix problems before they cost you delivery.

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