Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
krombacher.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 18:23:45 UTC · ↺ Refresh
MX Hostnames
- krombacher-de.mail.protection.outlook.com
MX Priorities
- krombacher-de.mail.protection.outlook.com: 0
A / AAAA Records
- 18.199.22.252 ↩ ec2-18-199-22-252.eu-central-1.compute.amazonaws.com
Mail Server IPs
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.brandshelter.com tech.brandshelter.com 2026033100 10800 3600 604800 300
Primary NS (mname)
ns1.brandshelter.com
Admin Email (rname)
tech@brandshelter.com
Serial
2026033100
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1.brandshelter.com
ns5.brandshelter.us
ns2.brandshelter.de
ns4.brandshelter.net
ns3.brandshelter.info
SPF Record
✓ Strict (-all)
v=spf1 include:mail.login.krombacher.de include:spf.docuguide.com include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:ispgateway.de include:_spf.salesforce.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._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
15 records- google-site-verification=pJ5lmiMoPAIAPxAmfXEFZoOXvAFsezrlwRQHMVKLteI
- MS=ms31400489
- atlassian-domain-verification=jM8wbPzssEMHXm5k6cmG4vhRZmCH7PNIuOvUIAMNwiN6OBt9AmyjgimR5mWh6vBk
- cursor-domain-verification-5pa2st=RbZpc7UnSI8kPtL3QcVdbYxGG
- MS=B45555082644E28151974D52FA43706A2C15D54D
- apple-domain-verification=wPOhW1jx8EdCaThe
- jamf-site-verification=7bLnaAn-4KxUl9P9i1nHHw
- jetbrains-domain-verification=5hn9co3nisjcwz7cxmm02il81
- ZOOM_verify_H7pqrkmIS66CWjrJaq_Ubg
- s4siTCqxv5qBAvWHMtB0H0Qil6dTOQZam2rVDpQszdXrA2nRZeaYpLvDKJ8dicSKSAGyCbMBheJZDgBIK9pwOw==
- facebook-domain-verification=rqncxrcjy2blmn0ib1tqab89q41w4a
- duo_sso_verification=26UKBBDyzZNJhVWO4UuifCLNc9uaoiz4rfLdJ2XGGGSy0hbVZpelJbkeXAtkeyCC
- miro-verification=deefc442e858a982237e69cdde3392113a5325e8
- facebook-domain-verification=xoa33i4h5chl2uuwrox244b2uwg14j
- SPFv=spf1 include:mail.login.krombacher.de include:spf.docuguide.com include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:ispgateway.de include:_spf.salesforce.com -all
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