Is po4.synapse.ne.jp valid?

Domain: po4.synapse.ne.jp

Valid: Yes

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

Tested MX: mx.synapse.ne.jp (202.208.174.115)

DO NOT SCRAPE THIS DATA, USE THE API

Using MX pointer mx.synapse.ne.jp 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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