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 |
|---|---|---|---|
| 52.101.202.156 | mail-ph8pr21cu00204.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.60.65 | mail-bn3pr02cu00101.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.42.84 | mail-co1pr02cu00204.inbound.protection.outlook.com | Yes | Not listed |
| 52.101.42.81 | mail-ea2pr04cu00101.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:c95d:: | mail-ph8pr05cu00300.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:c946::16 | mail-ch2pr02cu00206.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:c927::8 | mail-bn3pr0301cu00200.inbound.protection.outlook.com | Yes | Not listed |
| 2a01:111:f403:c946::1c | mail-ch1pr02cu00104.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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