Is internetsecurity.com valid?

Domain: internetsecurity.com

Valid: Yes, but should be blocked

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

Tested MX: barracuda1.wwz.com (12.171.94.6)

USE THE API, DO NOT SCRAPE THIS DATA

Using MX pointer barracuda1.wwz.com from DNS with priority: 5

Block: Yes

You should block this domain for signups/registrations.

Disposable: No

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

Raw API reason:

DO NOT SCRAPE THIS DATA, USE THE API

Anomalies detected

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