Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
polytron-gmbh.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 20:34:25 UTC · ↺ Refresh
MX Hostnames
- mx01.hornetsecurity.com
- mx04.hornetsecurity.com
- mx03.hornetsecurity.com
- mx02.hornetsecurity.com
MX Priorities
- mx04.hornetsecurity.com: 40
- mx01.hornetsecurity.com: 10
- mx02.hornetsecurity.com: 20
- mx03.hornetsecurity.com: 30
A / AAAA Records
- 152.53.125.43 ↩ srv01.web.miaas.io
Mail Server IPs
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
- 94.100.134.8 ↩ mx03.hornetsecurity.com
SOA Record
Raw SOA
get.desec.io get.desec.io 2025124736 86400 3600 2419200 3600
Primary NS (mname)
get.desec.io
Admin Email (rname)
get@desec.io
Serial
2025124736
Refresh
86400s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
ns1.desec.io
ns2.desec.org
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com include:_spf.on.services include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com ip4:87.191.170.223 -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=s;adkim=s;fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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- apple-domain-verification=aIyNwrrOwQTIhxkI
- SPFv=spf1 mx include:spf.protection.outlook.com include:_spf.on.services include:spf.hornetsecurity.com include:spf-de.emailsignatures365.com ip4:87.191.170.223 -all
- MS=ms62071610
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