ns.checkeremail.com

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

IP & reverse DNS

IP address	Reverse DNS (PTR)	FCrDNS	DNSBL
52.101.73.145	mail-am6pr02cu00301.inbound.protection.outlook.com	Yes	Not listed
52.101.103.162	mail-miypr03cu00202.inbound.protection.outlook.com	Yes	Not listed
52.101.103.143	No	Unknown	Not listed
52.101.91.159	mail-matpr04cu00207.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:ca21::8	mail-matpr04cu00100.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:ca04::e	mail-db8pr02cu00106.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:ca48::a	mail-miypr02cu00202.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:ca09::28	mail-am6pr02cu00300.inbound.protection.outlook.com	Yes	Not 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

century21.fr

What does this mean?

These are public DNS facts about the mail server ns.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.