posteo.com

Valid Email Server
Domain Lookup › posteo.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
posteo.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-22 09:36:27 UTC · ↺ Refresh

MX Hostnames

  • mx04.posteo.de
  • mx01.posteo.de
  • mx03.posteo.de

MX Priorities

  • mx03.posteo.de: 10
  • mx04.posteo.de: 10
  • mx01.posteo.de: 10

A / AAAA Records

  • 185.67.36.169 (no PTR)
  • 2a05:bc0:1000::169:1 (no PTR)

Mail Server IPs

  • 185.67.36.63 ↩ mx03.posteo.de
  • 185.67.36.70 ↩ mx03.posteo.de
  • 185.67.36.64 ↩ mx04.posteo.de
  • 185.67.36.61 ↩ mx01.posteo.de
  • 185.67.36.62 ↩ mx01.posteo.de

SOA Record

Raw SOA ns01.posteo-dns.de hostmaster.posteo.de 1774144873 3600 900 3542400 3600
Primary NS (mname)
ns01.posteo-dns.de
Admin Email (rname)
hostmaster@posteo.de
Serial
1774144873
Refresh
3600s
Retry
900s
Expire
3542400s
Minimum TTL
3600s

Nameservers (NS)

ns31.posteo-dns.eu
world.excedodns.org
global.excedodns.com
nordic.excedodns.net
sto.excedodns.se
emea.excedodns.eu
ns01.posteo-dns.de
ns02.posteo-dns.de
ns21.posteo-dns.ch

SPF Record

✓ Soft Fail (~all)
v=spf1 redirect=posteo.de
📊 DNS lookups: 1/10

DMARC Record

✗ p=none
v=DMARC1; p=none; sp=reject; adkim=s; aspf=s
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict · DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • f02150cd43d1ee208f506b24e16c30c4b4ac9837037e14a54328f2307999d13
  • SPFv=spf1 redirect=posteo.de
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