csslabs.de

Valid Email Server
Domain Lookup › csslabs.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
csslabs.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-20 21:59:01 UTC · ↺ Refresh

MX Hostnames

  • csslabs-de.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 85.214.131.253

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns4.stratoserver.net
ns3.stratoserver.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.crsend.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

2 records
  • MS=ms99787112
  • SPFv=spf1 include:spf.protection.outlook.com include:spf.crsend.com -all
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