kastner.de

Valid Email Server
Domain Lookup › kastner.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
kastner.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-30 22:04:19 UTC · ↺ Refresh

MX Hostnames

  • mail.kastner.de

MX Priorities

  • mail.kastner.de: 10

A / AAAA Records

  • 185.243.10.196 ↩ cluster.kastner.de

Mail Server IPs

  • 62.225.4.51 ↩ mail.kastner.de

SOA Record

Raw SOA ns.inwx.de hostmaster.inwx.de 2026030901 10800 3600 1209600 3600
Primary NS (mname)
ns.inwx.de
Admin Email (rname)
hostmaster@inwx.de
Serial
2026030901
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

ns2.inwx.de
ns3.inwx.eu
ns.inwx.de

SPF Record

✓ Strict (-all)
v=spf1 mx a a:mail.kastner.de a:cluster.kastner.de a:odin.kastner.de ip4:62.225.4.51 include:agenturserver.de include:spf.protection.outlook.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:d:s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • MS=ms79556759
  • google-site-verification=MoPGuNrF7_74laPdmtsmsybPSQ2FIq4F7NX7-yaP90Y
  • SPFv=spf1 mx a a:mail.kastner.de a:cluster.kastner.de a:odin.kastner.de ip4:62.225.4.51 include:agenturserver.de include:spf.protection.outlook.com -all
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