ns.checkeremail.com

ns.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
52.67.103.141	ec2-52-67-103-141.sa-east-1.compute.amazonaws.com	Yes	Not listed
56.124.2.4	ec2-56-124-2-4.sa-east-1.compute.amazonaws.com	Yes	Not listed
15.229.225.178	ec2-15-229-225-178.sa-east-1.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.eml100gru.ctr.sophos.com ESMTP Postfix`

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

Domains using this mail server

dinac.gov.py

What does this mean?

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.