ns.checkeremail.com is a mail server (MX) used by 1 checked domain. Based on public DNS, it looks healthy.
| IP address | Reverse DNS (PTR) | FCrDNS | DNSBL |
|---|---|---|---|
| 52.101.103.143 | mail-miypr03cu00107.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.209.31 | mail-cpjpr05cu00207.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.185.114 | mail-zrxpr04cu00102.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.91.153 | mail-matpr04cu00101.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:ca48::8 | mail-miypr02cu00100.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:ca21::e | mail-matpr04cu00306.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:ca09::a | mail-am7pr02cu00202.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:ca38::8 | mail-wa4pr04cu00100.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.
These are public DNS facts about the mail server ns.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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