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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 addressReverse DNS (PTR)FCrDNSDNSBL
52.101.60.64NoUnknownNot listed
52.101.50.12NoUnknownNot listed
52.101.41.1NoUnknownNot listed
52.101.103.139NoUnknownNot 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 softwareMicrosoft Exchange / 365 (from SMTP banner)
SMTP banner220 SJ1PEPF0000231B.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Sat, 3 Oct 2026 04:02:46 +0000 [08DF1CA5A9579A5D]

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

Domains using this mail server

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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