Enter your domain and abr.cloud resolves its MX records — the mail servers that receive email for you — checks they're reachable, and flags anything that could bounce or delay your mail.
One quick verification, no account. We store nothing unless you start monitoring.
MX (Mail Exchange) records are DNS entries that tell the world which servers accept email for your domain, and in what priority order. If they're missing, wrong, or point at an unreachable host, inbound mail bounces or silently disappears — so they're the foundation everything else in email sits on.
Yes — free with a quick CAPTCHA, no account. It reads only public DNS and tests reachability.
Some providers accept mail on the A record as a fallback, but you should publish explicit MX records — otherwise delivery is fragile and unpredictable.
Indirectly — a healthy, reachable MX plus aligned SPF/DMARC all feed the reputation that keeps you out of spam.
abr.cloud puts 80+ network & security tools behind one fast interface — with AI analysis and always-on monitoring.
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