Is markcmueller.com valid?

markcmueller.com is an invalid domain that should be blocked from sign-ups or registrations. Based on our analysis, you should block this invalid domain. If a user is trying to sign-up using an e-mail on this domain, it's likely a typo, or a malicious attempt.

Raw API JSON response:

{
    "domain": "markcmueller.com",
    "valid": false,
    "block": false,
    "is_disposable": false,
    "is_email_forwarder": false,
    "mx_host": "Temporary error",
    "mx_ip": null,
    "mx_info": "Temporary error",
    "text": "Temporary error",
    "risk": 0,
    "reason": "Temporary error"
}