Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
clavister.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 18:52:33 UTC · ↺ Refresh
MX Hostnames
- clavister-de.mail.protection.outlook.com
MX Priorities
- clavister-de.mail.protection.outlook.com: 0
A / AAAA Records
- 88.131.48.13 ↩ www.clavister.com
Mail Server IPs
- 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.clavister.com registry.clavister.com 2025032001 3600 300 2419200 300
Primary NS (mname)
dns1.clavister.com
Admin Email (rname)
registry@clavister.com
Serial
2025032001
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
dns3.clavister.com
dns4.clavister.com
dns1.clavister.com
dns2.clavister.com
SPF Record
✓ Strict (-all)
v=spf1 a mx a:smtpgw.clavister.com ip4:88.131.48.15 ip4:88.131.48.18 include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo 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- SPFv=spf1 a mx a:smtpgw.clavister.com ip4:88.131.48.15 ip4:88.131.48.18 include:spf.protection.outlook.com -all
- MS=ms92373946
- N4wVkgnAx26VQLkPRlMkJAsoy4vy97nPDBifoLiC6bVsFu5VN/qEltVAAirsPVV6IGAu1aCDmqVy57g0rWOMbA==
- 2XEq5DVNOybbPqSTl/dUgdgSrRGPegiz9+lA4BVvaygIQ3aehcCivphjZid4y//ko6hpRTDlLDrVGUMNsl+wSQ==
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