Is isr.ist.utl.pt valid?

Domain: isr.ist.utl.pt

Valid: Yes

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

Tested MX: smtp2.ist.utl.pt (193.136.128.20)

Using MX pointer smtp2.ist.utl.pt from DNS with priority: 60

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.

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Raw API reason:

No anomaly detected

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