Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
contrast-ms.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 15:49:03 UTC · ↺ Refresh
MX Hostnames
- mx01.hornetsecurity.com
- mx02.hornetsecurity.com
- mx03.hornetsecurity.com
- mx04.hornetsecurity.com
MX Priorities
- mx03.hornetsecurity.com: 30
- mx04.hornetsecurity.com: 40
- mx02.hornetsecurity.com: 20
- mx01.hornetsecurity.com: 10
A / AAAA Records
- 5.9.138.53 ↩ s2.attentio.de
- 2a01:4f8:190:1230::3 (no PTR)
Mail Server IPs
- 94.100.134.8 ↩ mx03.hornetsecurity.com
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
SOA Record
Raw SOA
ns-a.ktk.de hostmaster.noc.ktk.de 2019052135 3600 900 604800 3600
Primary NS (mname)
ns-a.ktk.de
Admin Email (rname)
hostmaster@noc.ktk.de
Serial
2019052135
Refresh
3600s
Retry
900s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns-b.ktk.io
ns-c.ktk.de
ns-a.ktk.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:212.7.183.222 ip4:212.7.183.221 ip4:194.245.39.3 ip4:212.7.183.219 ip4:212.7.180.98 ip4:212.7.183.217 include:agenturserver.de include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 a mx ip4:212.7.183.222 ip4:212.7.183.221 ip4:194.245.39.3 ip4:212.7.183.219 ip4:212.7.180.98 ip4:212.7.183.217 include:agenturserver.de include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com ~all
- MS=ms84878485
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