s-instruments.de

Valid Email Server
Domain Lookup › s-instruments.de

Domain Overview

DNS: ✓ 2d ago Checker: ✓ 2d ago
s-instruments.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-19 04:18:11 UTC · ↺ Refresh

MX Hostnames

  • mx01.ionos.de
  • mx00.ionos.de

MX Priorities

  • mx01.ionos.de: 10
  • mx00.ionos.de: 10

A / AAAA Records

  • 217.160.0.124 ↩ 217-160-0-124.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

  • 217.72.192.67 ↩ mx01.kundenserver.de
  • 212.227.15.41 ↩ mx00.kundenserver.de

SOA Record

Raw SOA ns1111.ui-dns.com hostmaster.1und1.com 2017060197 28800 7200 604800 600
Primary NS (mname)
ns1111.ui-dns.com
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060197
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1110.ui-dns.de
ns1110.ui-dns.biz
ns1111.ui-dns.com
ns1084.ui-dns.org

SPF Record

✓ Strict (-all)
v=spf1 include:_spf-eu.ionos.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject

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

1 record
  • SPFv=spf1 include:_spf-eu.ionos.com -all
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