checkeremail.com

checkeremail.com is a mail server (MX) used by 1 checked domain. Based on public DNS, it looks healthy.

IP & reverse DNS

IP address	Reverse DNS (PTR)	FCrDNS	DNSBL
3.136.119.94	ec2-3-136-119-94.us-east-2.compute.amazonaws.com	Yes	Not listed
18.189.68.4	ec2-18-189-68-4.us-east-2.compute.amazonaws.com	Yes	Not listed
3.129.196.198	ec2-3-129-196-198.us-east-2.compute.amazonaws.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.

Server software

Detected software	Postfix (from SMTP banner)
SMTP banner	`220 mx-01-us-east-2.prod.hydra.sophos.com ESMTP Postfix`

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

Domains using this mail server

dyntool.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.