Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koester-abbruch.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 06:41:29 UTC · ↺ Refresh
MX Hostnames
- koesterabbruch-de01i.mail.protection.outlook.com
MX Priorities
- koesterabbruch-de01i.mail.protection.outlook.com: 10
A / AAAA Records
- 78.47.190.174 ↩ kundenserver240401.ws-haltern.de
- 2a01:4f8:c012:a0a4::1 ↩ kundenserver240401.ws-haltern.de
Mail Server IPs
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns2.ws-haltern.de tweihs.ws-haltern.de 2026033100 3600 900 1209600 1200
Primary NS (mname)
ns2.ws-haltern.de
Admin Email (rname)
tweihs@ws-haltern.de
Serial
2026033100
Refresh
3600s
Retry
900s
Expire
1209600s
Minimum TTL
1200s
Nameservers (NS)
ns2.ws-haltern.de
ns4.ws-haltern.de
ns3.ws-haltern.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms47538896
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