css-lb.de

Valid Email Server
Domain Lookup › css-lb.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
css-lb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 22:40:44 UTC · ↺ Refresh

MX Hostnames

  • csslb-de0i.mail.protection.outlook.com

MX Priorities

  • csslb-de0i.mail.protection.outlook.com: 0

A / AAAA Records

  • 80.74.136.182 ↩ 1.cloudrexx.com

Mail Server IPs

  • 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
  • 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com

SOA Record

Raw SOA ns.udag.de hostmaster.united-domains.de 2024071717 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024071717
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.udag.de
ns.udag.org
ns.udag.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_smtp.udag.de include:spf.protection.outlook.com include:spf.cloudrexx.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

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

4 records
  • DMARCv=DMARC1; p=none;
  • apple-domain-verification=Y7TcCcutMYivcuPv
  • Carl-Schaefer-Schule, Hohenzollernstr. 30, 71638 Ludwigsburg
  • SPFv=spf1 include:_smtp.udag.de include:spf.protection.outlook.com include:spf.cloudrexx.com ~all
Full email verification for css-lb.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits