How to block fitbird.com invalid e-mail domain
This domain is valid and should be able to receive e-mail.
Using MX pointer mail.h-email.net from DNS with priority: 5
You should block this domain for signups/registrations.
This does not look like a temporary/disposable e-mail domain.
Heuristics: BM1
DOMAIN RISK: 95
Are you a programmer?
Did you know we have a free API to validate e-mails and block fitbird.com?