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checkeremail.com

checkeremail.com is a mail server (MX) used by 1 checked domain. Based on public DNS, it is partially configured.

IP & reverse DNS

IP addressReverse DNS (PTR)FCrDNSDNSBL
18.66.233.121server-18-66-233-121.waw51.r.cloudfront.netYesNot listed
18.66.233.59server-18-66-233-59.waw51.r.cloudfront.netYesNot listed
18.66.233.77server-18-66-233-77.waw51.r.cloudfront.netYesNot listed
18.66.233.89server-18-66-233-89.waw51.r.cloudfront.netYesNot listed
2600:9000:2435:6200:19:d9c9:16c0:93a1NoUnknownNot listed
2600:9000:2435:c00:19:d9c9:16c0:93a1NoUnknownNot listed
2600:9000:2435:ea00:19:d9c9:16c0:93a1NoUnknownNot listed
2600:9000:2435:2a00:19:d9c9:16c0:93a1NoUnknownNot listed
2600:9000:2435:a800:19:d9c9:16c0:93a1NoUnknownNot listed
2600:9000:2435:4000:19:d9c9:16c0:93a1NoUnknownNot listed
2600:9000:2435:e600:19:d9c9:16c0:93a1NoUnknownNot listed
2600:9000:2435:aa00:19:d9c9:16c0:93a1NoUnknownNot listed

FCrDNS (forward-confirmed reverse DNS) passes when the IP’s PTR name resolves back to the same IP. It is a key signal that a mail server is legitimately configured; servers without it are widely treated as suspicious.

Domains using this mail server

What does this mean?

These are public DNS facts about the mail server checkeremail.com — the host that other servers connect to when delivering email for the domains above. We do not actively probe it over SMTP; the checks here are reverse DNS, forward-confirmed rDNS and public blocklists.

To look up a specific domain’s mail setup use the MX Lookup, or verify an address with the email checker. Learn more in email servers explained.

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