ns.checkeremail.com

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

IP & reverse DNS

IP address	Reverse DNS (PTR)	FCrDNS	DNSBL
52.101.8.65	mail-dm6pr04cu00201.inbound.protection.outlook.com	Yes	Not listed
52.101.8.38	mail-dm3pr04cu00106.inbound.protection.outlook.com	Yes	Not listed
52.101.41.180	mail-byapr04cu00204.inbound.protection.outlook.com	Yes	Not listed
52.101.50.1	mail-co1pr05cu00401.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c95d::4	mail-ph6pr04cu00104.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f909::4	mail-bn0pr03cu00304.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c902::	mail-sj2pr05cu00300.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c95d::2	mail-ph7pr05cu00102.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

isgh.org.br

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.