pobox.com

Observed Jul 24, 2026, 01:53 UTC (6h ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.

Verify this receipt yourself + Watch this domain

Up right now

Runs onCloudflare

Secured byLet's Encrypt

1 subdomain · tranco_100k

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

INFRASTRUCTURE MAPwhat pobox.com actually stands on - every host below is a signed observation

pobox.com

A / AAAA

103.168.172.65

Cloudflareserves the site

fmns1.messagingengine.comfmns2.messagingengine.com

messagingengine.comanswers its DNS

in1-smtp.messagingengine.comin2-smtp.messagingengine.com

messagingengine.comreceives its email

TLS

*.pobox.com

Let's Encryptissued its certificate

DNS Records

A 1

103.168.172.65

MX 2

10in1-smtp.messagingengine.com
20in2-smtp.messagingengine.com

TXT 4

v=spf1 include:spf.messagingengine.com ~all
v=DMARC1; p=none; rua=mailto:e3936a44@inbox.ondmarc.com
v=spf1 include:spf.messagingengine.com ~all
v=STSv1; id=20251216T132000

NS 2

fmns1.messagingengine.com
fmns2.messagingengine.com

SOA 1

fmns1.messagingengine.com postmaster.messagingengine.com

SRV 3

autodiscover.fastmail.com:443 p0
imap.fastmail.com:993 p0
:0 p0

CAA 4

issue "digicert.com"
issue "letsencrypt.org"
issuewild "digicert.com"
issuewild "letsencrypt.org"

TLS Certificates (3)

Common Name	Issuer	Expires
`*.pobox.com`	C=US, O=Let's Encrypt, CN=YR1	Sat, 26 Sep 2026 00:19:58 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

sasl.smtp.pobox.com

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 pobox.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_21186cd6e2c3fbe3
Output Hash: 22d1a291cdef755743ab6e67fb337432e4243f32f2649014505316ecbd0c3f29
Signature: ed25519:56e1399a17054505fb52f856d90417882b69aeb3787e955e113e6cbdf67ea123103aba8c4e7b22f2aead4854390edd4fb4494babfc37452584daa2144177a80b
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/pobox.com