How to block opuslog.com.br invalid e-mail domain
This domain is valid and should be able to receive e-mail.
Using MX pointer mail.opuslog.com.br from DNS with priority: 0
You should block this domain for signups/registrations.
This does not look like a temporary/disposable e-mail domain.
Heuristics: T2b
DOMAIN RISK: 99
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Did you know we have a free API to validate e-mails and block opuslog.com.br?