et-systems.de

Valid Email Server
Domain Lookup › et-systems.de

Domain Overview

DNS: ✓ 1mo ago Checker: ✓ 1mo ago
et-systems.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-06 14:23:58 UTC · ↺ Refresh

MX Hostnames

  • etsystems-de0e.mail.protection.outlook.com

MX Priorities

  • etsystems-de0e.mail.protection.outlook.com: 0

A / AAAA Records

  • 85.25.46.204 ↩ et-systems.de

Mail Server IPs

  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
  • 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com

SOA Record

Raw SOA ns1080.ui-dns.biz hostmaster.1und1.de 2017012531 28800 7200 604800 300
Primary NS (mname)
ns1080.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.de
Serial
2017012531
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1080.ui-dns.org
ns1080.ui-dns.biz
ns1080.ui-dns.de
ns1080.ui-dns.com

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:80.151.146.148 ip4:85.25.46.204 ip6:2a0a:51c0:0:236::2 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

3 records
  • SPFv=spf1 ip4:80.151.146.148 ip4:85.25.46.204 ip6:2a0a:51c0:0:236::2 include:spf.protection.outlook.com ~all
  • XUPKsW4NX2JVMlLpXDVgnOoYhIkwjAY/hf8NRyZTJtF1dedGk5vgGXMGOaLFPXuFC4p7UPyL/KNaLaGqphnOkQ==
  • MS=04B224ABEF3C733B078785A5CFE157D781FB5DED
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