Is f-ms.fr valid?

Domain: f-ms.fr

Valid: Yes

This domain is valid and should be able to receive e-mail.

Tested MX: fms-fr0c.mail.protection.outlook.com (52.101.166.1)

DO NOT SCRAPE THIS DATA, USE THE API

Using MX pointer fms-fr0c.mail.protection.outlook.com from DNS with priority: 1

Block: No

You do not need to block this domain for signups/registrations.

Disposable: No

This does not look like a temporary/disposable e-mail domain.

Raw API reason:

USE THE API, DO NOT SCRAPE THIS DATA

Heuristics: WM1

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