ntp.org
Number 64 of the Top 100 · Tranco rank 72
ntp.org is the home of the Network Time Protocol and the NTP Pool. Computers and routers reach pool.ntp.org to set their clocks, so it appears on almost every network.
Can ntp.org be forged?
Can ntp.org be forged?
Partly. Forged mail goes to the spam folder, where people still find it.
- The exact name
- quarantine · subdomains quarantine · reports to dmarcian
- Names that copy
- 113 registered lookalikes can send mail. DMARC never sees them. See them →
What we noticed
- The DMARC policy sends failing mail to the spam folder. A policy of reject stops it.
- The SPF record marks an unlisted sender as a soft failure. A hard failure is stronger.
Senders it names none named
These are the services the records name. A record can name a service no longer used, and a sender can sign without being named.
SPF~all · 2 of 10 lookups · 35 addresses
Flags others · 2 of 10 lookups · 0 of 2 void lookups · 35 IPv4 addresses · 2 IPv6 blocks · Includes of its senders
Every term and include
DKIM1 key found
- mail._domainkey · rsa 1024
We look under the selectors of the services the records name. A domain can have keys we do not find.
Sending names 10 names, 0 at reject
| Name | Policy | SPF lookups | Reports to |
|---|---|---|---|
| forum.ntp.org | quarantine (inherited) | 2 | — |
| imap.ntp.org | quarantine (inherited) | 2 | — |
| mail.ntp.org | quarantine | 2 | dmarcian |
| mail2.ntp.org | quarantine (inherited) | 2 | — |
| nagios.ntp.org | quarantine (inherited) | 0 | — |
| ns1.ntp.org | quarantine (inherited) | 2 | — |
| ns2.ntp.org | quarantine (inherited) | 2 | — |
| smtp.ntp.org | quarantine (inherited) | 2 | — |
| support.ntp.org | quarantine (inherited) | 2 | — |
| www.ntp.org | quarantine (inherited) | 2 | — |
Reportsdmarcian, on every name
Aggregate reports (rua) go to mailto:xpvutgi3@ag.dmarcian.com. Failure reports (ruf) are asked for.
Transport MTA-STS none · TLS-RPT none · BIMI none
MTA-STS asks senders to deliver to ntp.org over encrypted connections only. TLS-RPT asks for reports when they cannot. BIMI shows a logo beside mail that passes DMARC at quarantine or reject.
Read on Oct 28, 2026. Check it again yourself →
Watch your own domain's mail this way: Sender Security · the DMARC Report