Can xbm7bx391sm5owt6xe.gq receive emails?
No, xbm7bx391sm5owt6xe.gq cannot receive emails because
it has neither an A record nor MX records.
Should you allow users to sign up to your website using the domain xbm7bx391sm5owt6xe.gq?
No, xbm7bx391sm5owt6xe.gq is a throwaway domain and
should be blocked.
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