arno-online.de

Valid Email Server
Domain Lookup › arno-online.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
arno-online.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-01 19:38:40 UTC · ↺ Refresh

MX Hostnames

  • firewall5.arno.group
  • firewall6.arno.group
  • firewall.arno.group

MX Priorities

  • firewall5.arno.group: 20
  • firewall6.arno.group: 30
  • firewall.arno.group: 10

A / AAAA Records

  • 37.202.4.128 ↩ r11184.agenturserver.it

Mail Server IPs

  • 151.189.123.55 ↩ firewall5.arno.group
  • 151.189.123.56 ↩ firewall6.arno.group
  • 151.189.123.50 ↩ firewall.arno.group

SOA Record

Raw SOA nsa1.schlundtech.de m\.klein.arno-online.com 2023121301 43200 7200 1209600 86400
Primary NS (mname)
nsa1.schlundtech.de
Admin Email (rname)
m\@klein.arno-online.com
Serial
2023121301
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

nsc1.schlundtech.de
nsd1.schlundtech.de
nsb1.schlundtech.de
nsa1.schlundtech.de

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

1 record
  • MS=ms79780075
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