checkeremail.com

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
52.101.41.125	mail-byapr05cu00605.inbound.protection.outlook.com	Yes	Not listed
52.101.11.17	mail-sn1pr0501cu00301.inbound.protection.outlook.com	Yes	Not listed
52.101.10.1	mail-bn6pr02cu00301.inbound.protection.outlook.com	Yes	Not listed
52.101.60.68	No	Unknown	Not listed
2a01:111:f403:f900::1	mail-mn2pr05cu00301.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c922::	mail-bl0pr03cu00400.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:f90f::1	mail-sa9pr04cu00201.inbound.protection.outlook.com	Yes	Not listed
2a01:111:f403:c92c::7	mail-dm3pr04cu00107.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 BN3PEPF0000B06F.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Tue, 15 Sep 2026 04:10:07 +0000 [08DF0A3F46FA8572]`

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

Domains using this mail server

concord-academy.org

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.