Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
boerner.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 14:42:20 UTC · ↺ Refresh
MX Hostnames
- mx03.hornetsecurity.com
- mx01.hornetsecurity.com
- mx02.hornetsecurity.com
- mx04.hornetsecurity.com
MX Priorities
- mx01.hornetsecurity.com: 10
- mx02.hornetsecurity.com: 20
- mx03.hornetsecurity.com: 30
- mx04.hornetsecurity.com: 40
A / AAAA Records
- 93.191.48.183 ↩ boerner4.christo.net
Mail Server IPs
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
- 94.100.134.8 ↩ mx03.hornetsecurity.com
- 94.100.136.7 ↩ mx04.hornetsecurity.com
SOA Record
Raw SOA
ns10.bytes24.de postmaster.boerner.de 2025121106 10800 3600 604800 3600
Primary NS (mname)
ns10.bytes24.de
Admin Email (rname)
postmaster@boerner.de
Serial
2025121106
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns11.bytes24.de
ns10.bytes24.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:servers.mcsv.net include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf.christo.net a mx ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._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
4 records- SPFv=spf1 include:servers.mcsv.net include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf.christo.net a mx ~all
- google-site-verification=I4lEbXGYt-Y410GLYR6wgKwfwjztF2d7fu6tKSKnvBA
- klaviyo-site-verification=UnLLzG
- ms=ms84997359
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