Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ssfbonn.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 23:01:17 UTC · ↺ Refresh
MX Hostnames
- mx01.hornetsecurity.com
- mx04.hornetsecurity.com
- mx02.hornetsecurity.com
- mx03.hornetsecurity.com
MX Priorities
- mx01.hornetsecurity.com: 10
- mx04.hornetsecurity.com: 40
- mx02.hornetsecurity.com: 20
- mx03.hornetsecurity.com: 30
A / AAAA Records
- 217.160.0.6 ↩ 217-160-0-6.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com
Mail Server IPs
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
- 94.100.134.8 ↩ mx03.hornetsecurity.com
SOA Record
Raw SOA
ns1104.ui-dns.org hostmaster.1und1.com 2017060141 28800 7200 604800 600
Primary NS (mname)
ns1104.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060141
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1104.ui-dns.org
ns1054.ui-dns.biz
ns1038.ui-dns.com
ns1062.ui-dns.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.crsend.com include:spf.protection.outlook.com include:spf.hornetsecurity.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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- zone-ownership-verification-b2930a774d3609ba251bdd35687061fdff525a4afeb6cb2aa09757496406e737
- google-site-verification=hQx16ZY0k9CnbAGDFiykhJf4UGKK2OssL3bCi5bhKrg
- MS=EB01A8B26CF674FE4408A9967E2243C98DFE8E41
- SPFv=spf1 include:spf.crsend.com include:spf.protection.outlook.com include:spf.hornetsecurity.com ~all
Full email verification for ssfbonn.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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