karlshochschule.de

Valid Email Server
Domain Lookup › karlshochschule.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
karlshochschule.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 19:07:13 UTC · ↺ Refresh

MX Hostnames

  • karlshochschule-de.mail.protection.outlook.com

MX Priorities

  • karlshochschule-de.mail.protection.outlook.com: 1

A / AAAA Records

  • 217.160.0.237 ↩ 217-160-0-237.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::2f2 ↩ 2001-08d8-100f-f000-0000-0000-0000-02f2.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
  • 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com

SOA Record

Raw SOA ns1122.ui-dns.org hostmaster.1und1.com 2017031279 28800 7200 604800 600
Primary NS (mname)
ns1122.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017031279
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1079.ui-dns.com
ns1122.ui-dns.org
ns1048.ui-dns.biz
ns1093.ui-dns.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:185.56.130.5 ip4:85.115.17.18 include:spf.protection.outlook.com include:spf.nl2go.com include:spf.crsend.com mx -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1

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

All TXT Records

4 records
  • adobe-idp-site-verification=21f6473c999e84d8091e2e73aaba39925e4b8b5f904ac1c854f70f31f738394f
  • SPFv=spf1 ip4:185.56.130.5 ip4:85.115.17.18 include:spf.protection.outlook.com include:spf.nl2go.com include:spf.crsend.com mx -all
  • apple-domain-verification=f0tcjjpPOE1QecCx
  • 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