postfix.org

Observed Jul 18, 2026, 13:35 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onHetzner Online

Secured byLet's Encrypt

Registered withTucows Domains Inc.

IPv6 · 1 subdomain · tranco_40k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat postfix.org actually stands on - every host below is a signed observation

postfix.org

A / AAAA

95.216.145.12a01:4f9:c010:8fb::bee

Hetzner Onlineserves the site

ns1.desec.ions2.desec.org

desec.io + desec.organswers its DNS

list.sys4.de

sys4.dereceives its email

TLS

postfix.org

Let's Encryptissued its certificate

DNS Records

A 1

95.216.145.1

AAAA 1

2a01:4f9:c010:8fb::bee

MX 1

10list.sys4.de

TXT 1

v=spf1 include:_spf.list.sys4.de ~all

NS 2

ns1.desec.io
ns2.desec.org

SOA 1

get.desec.io get.desec.io

TLS Certificates (4)

Common Name	Issuer	Expires
`postfix.org`	C=US, O=Let's Encrypt, CN=YE1	Mon, 14 Sep 2026 03:46:30 +0000
`YE1`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.postfix.org

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for postfix.org. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/postfix.org">
  <img src="https://domaindrift.io/badge/postfix.org.svg"
       width="300" height="64" alt="DomainDrift signed observations for postfix.org">
</a>

Ed25519 Receipt

Receipt ID: e914dff0-8b8f-44b6-b645-4ed2e2c4d00a
Output Hash: 27e6f72f134389e7d2ba6bfd6e75f8992b1c53646d5d0fbc99a37ae3ecf00148
Signature: ed25519:a6cb78a4b2295e9b9d3311a97813829cf2a1d7ac90146fe6c719dade0c1b1a87d24785ecb5632884371f64a63dd7dfc556ba38ef03cb2f97a42101764c961206
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/postfix.org