Is cle.gapps.seattleschools.org valid?

How to block cle.gapps.seattleschools.org invalid e-mail domain

Domain: cle.gapps.seattleschools.org

Valid: No, should be blocked
This domain does not seem valid, and can probably not receive e-mail.

Tested MX: cle.gapps.seattleschools.org (155.254.144.107)

Unable to connect to MX on port 25

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:

No MX-pointer, and unable to connect to port 25

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cle.gapps.seattleschools.org

Status: Domain is valid

 

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