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checkeremail.com

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

IP & reverse DNS

IP addressReverse DNS (PTR)FCrDNSDNSBL
52.101.149.52mail-sy2pr01cu00604.inbound.protection.outlook.comYesNot listed
52.101.151.5mail-meupr01cu00305.inbound.protection.outlook.comYesNot listed
52.101.149.9mail-sy2pr01cu00501.inbound.protection.outlook.comYesNot listed
52.101.149.2mail-sy5pr01cu00902.inbound.protection.outlook.comYesNot listed
2a01:111:f403:cc31::amail-sy1pr01cu00102.inbound.protection.outlook.comYesNot listed
2a01:111:f403:cc31::1mail-sy8pr01cu00101.inbound.protection.outlook.comYesNot listed
2a01:111:f403:cc31::3mail-sy2pr01cu00503.inbound.protection.outlook.comYesNot listed
2a01:111:f403:cc33::1mail-meupr01cu00301.inbound.protection.outlook.comYesNot 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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