Is kastec.com.br valid?

Domain: kastec.com.br

Valid: Yes

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

Tested MX: spamcloud1.mundoopen.com.br (200.219.229.41)

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Using MX pointer spamcloud1.mundoopen.com.br from DNS with priority: 10

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:

Heuristics: WM1

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