isosysteme.de

Valid Email Server
Domain Lookup › isosysteme.de

Domain Overview

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

Checked via [email protected] · 2026-04-01 10:28:25 UTC · ↺ Refresh

MX Hostnames

  • mail.isosysteme.de

MX Priorities

  • mail.isosysteme.de: 10

A / AAAA Records

  • 94.16.106.61 ↩ neo.gridcorner.net

Mail Server IPs

  • 202.61.249.4 ↩ mail.gridcorner.net
  • 2a03:4000:54:fc5:a4da:4bff:fe5f:8c94 ↩ mail.gridcorner.net

SOA Record

Raw SOA ns.a.gridcorner.net servermaster.gridcorner.net 2025050605 28800 7200 604800 86400
Primary NS (mname)
ns.a.gridcorner.net
Admin Email (rname)
servermaster@gridcorner.net
Serial
2025050605
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns.c.gridcorner.net
ns.a.gridcorner.net
ns.b.gridcorner.net

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

No TXT records found.

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