Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
siebelhoff.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-18 19:58:10 UTC · ↺ Refresh
MX Hostnames
- mx04.hornetsecurity.com
- mx02.hornetsecurity.com
- mx01.hornetsecurity.com
- mx03.hornetsecurity.com
MX Priorities
- mx02.hornetsecurity.com: 20
- mx01.hornetsecurity.com: 10
- mx03.hornetsecurity.com: 30
- mx04.hornetsecurity.com: 40
A / AAAA Records
- 92.205.214.186 ↩ mc22610.ispgateway.de
Mail Server IPs
- 94.100.136.8 ↩ mx02.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.134.8 ↩ mx03.hornetsecurity.com
- 94.100.136.7 ↩ mx04.hornetsecurity.com
SOA Record
Raw SOA
ns81.domaincontrol.com dns.jomax.net 2026021601 28800 7200 604800 600
Primary NS (mname)
ns81.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026021601
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns81.domaincontrol.com
ns82.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 a include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf-de.emailsignatures365.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
✓ 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
3 records- facebook-domain-verification=z84ypw80ag8ic6g1lyi0eo8uho3vp5
- MS=ms46961174
- SPFv=spf1 a include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com -all
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