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 address	Reverse DNS (PTR)	FCrDNS	DNSBL
52.101.194.170	mail-ch1pr02cu00102.inbound.protection.outlook.com	Yes	Not listed
52.101.40.0	mail-cy3pr04cu00100.inbound.protection.outlook.com	Yes	Not listed
52.101.11.19	mail-sa9pr04cu00203.inbound.protection.outlook.com	Yes	Not listed
52.101.11.13	mail-sn1pr0501cu00205.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c918::	mail-byapr04cu00400.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f901::1	mail-bl0pr02cu00601.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f912::	mail-cy7pr21cu00100.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f803::	mail-byapr02cu00300.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.

Server software

Detected software	Microsoft Exchange / 365 (from SMTP banner)
SMTP banner	`220 BN2PEPF00004FBF.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Wed, 16 Sep 2026 11:33:12 +0000 [08DF108D55191201]`

Captured passively during an earlier check — we do not actively scan mail servers.

Domains using this mail server

ne.com

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.