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
52.101.60.2	mail-bnypr05cu00102.inbound.protection.outlook.com	Yes	Not listed
52.101.50.4	mail-co1pr03cu00404.inbound.protection.outlook.com	Yes	Not listed
52.101.40.56	mail-cy7pr05cu00100.inbound.protection.outlook.com	Yes	Not listed
52.101.41.3	mail-sj2pr05cu00103.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c92c::	mail-dm6pr04cu00200.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f909::b	mail-bnypr03cu00203.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f908::3	mail-bn3pr02cu00103.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f903::3	mail-mn0pr04cu00203.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 SN1PEPF00036F3F.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Mon, 10 Aug 2026 20:18:12 +0000 [08DEF3226477EFC3]`

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

Domains using this mail server

csculturalcenter.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.