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
52.101.41.22	mail-sj2pr05cu00406.inbound.protection.outlook.com	Yes	Not listed
52.101.9.87	mail-bl2pr02cu00507.inbound.protection.outlook.com	Yes	Not listed
52.101.194.19	mail-ch5pr02cu00303.inbound.protection.outlook.com	Yes	Not listed
52.101.9.4	mail-mn2pr05cu00304.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c801::	mail-sa9pr02cu00200.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c91d::b	mail-mw2pr02cu00603.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f910::1	mail-cy3pr04cu00101.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c927::7	mail-bn0pr04cu00907.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 CY4PEPF0000EE39.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Mon, 10 Aug 2026 13:00:43 +0000 [08DEF3072F784FC4]`

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

Domains using this mail server

dcentertainment.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.