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 |
|---|---|---|---|
| 52.101.185.21 | mail-zrxpr05cu00105.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.68.12 | mail-db9pr02cu00204.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.91.162 | mail-matpr04cu00302.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.73.126 | mail-am8pr83cu00106.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:ca09::a | mail-am7pr02cu00202.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:ca21::10 | mail-matpr05cu00100.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:ca48::10 | mail-miypr05cu00100.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:c967::c | mail-cpjpr05cu00204.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 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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