checkeremail.com

checkeremail.com is a mail server (MX) used by 1 checked domain. Based on public DNS, it has reputation/setup issues.

IP & reverse DNS

IP address	Reverse DNS (PTR)	FCrDNS	DNSBL
52.101.10.17	No	Unknown	Not listed
52.101.91.161	No	Unknown	Not listed
52.101.11.18	No	Unknown	Not listed
52.101.60.187	No	Unknown	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 MWH0EPF000C6188.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Wed, 19 Aug 2026 12:09:04 +0000 [08DEF8D0E9D164A5]`

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

Domains using this mail server

msn.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.

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