Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
knubel.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 13:22:07 UTC · ↺ Refresh
MX Hostnames
- knubel-de.mail.protection.outlook.com
MX Priorities
- knubel-de.mail.protection.outlook.com: 10
A / AAAA Records
- 88.198.77.213 ↩ static.88-198-77-213.clients.your-server.de
Mail Server IPs
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns3.edns.de tech.planetlan.de 2020021343 3600 1800 604800 86400
Primary NS (mname)
ns3.edns.de
Admin Email (rname)
tech@planetlan.de
Serial
2020021343
Refresh
3600s
Retry
1800s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns3.edns.de
ns4.edns.de
SPF Record
✓ Strict (-all)
v=spf1 mx a include:spf.mailjet.com include:smtp-01.tool24.de include:spf.protection.outlook.com include:mailproxy.autohauskenner.de a:mailin3.audi.de a:mailin4.audi.de a:relay.tw.de -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;rua=mailto:[email protected];ri=86400;aspf=s;fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
5 records- google-site-verification=Yjuw_ComvKL6H2kWXam_EigbR2zwVtcHLKoEUSM-2Io
- Sophos-domain-verification=1600dd5507d9597c85990ff9d5ebb4d7f0998af9a854de05f0f6adf12c45bec5
- MS=ms39626117
- apple-domain-verification=p4QW8nSreDf8AlHX
- SPFv=spf1 mx a include:spf.mailjet.com include:smtp-01.tool24.de include:spf.protection.outlook.com include:mailproxy.autohauskenner.de a:mailin3.audi.de a:mailin4.audi.de a:relay.tw.de -all
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