freie-schule-rhein-sieg.de

Valid Email Server
Domain Lookup › freie-schule-rhein-sieg.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
freie-schule-rhein-sieg.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 18:11:23 UTC · ↺ Refresh

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MX Hostnames

  • freieschulerheinsieg-de01c1be.mail.protection.outlook.com

MX Priorities

  • freieschulerheinsieg-de01c1be.mail.protection.outlook.com: 0

A / AAAA Records

  • 217.160.0.55 ↩ 217-160-0-55.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
  • 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
  • 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
  • 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com

SOA Record

Raw SOA ns1046.ui-dns.org hostmaster.1und1.com 2017060124 28800 7200 604800 600
Primary NS (mname)
ns1046.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060124
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1074.ui-dns.de
ns1124.ui-dns.com
ns1033.ui-dns.biz
ns1046.ui-dns.org

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf-eu.ionos.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

1 record
  • SPFv=spf1 include:_spf-eu.ionos.com include:spf.protection.outlook.com ~all
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