cs3.com

Valid Email Server
Domain Lookup › cs3.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
cs3.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 21:59:39 UTC · ↺ Refresh

MX Hostnames

  • cs3-com.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 192.185.74.209

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com
ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com

SPF Record

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

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

8 records
  • "MS=ms78341490"
  • "v=spf1 ip4:75.145.208.29 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com -all"
  • mscid=7TvaxCjMSpI9wvGUC+1r+pfYVMwI50V3wgpH+IpdFOjXh5OQBMqMCHHjSzn0jXguO9ZgvxKBLQbF35YCnF7ACA==
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • "google-site-verification=WkfGw_8_O9JDuBoDosSJBEUXs_VflSDNEqloq5tWKQw"
  • "hrdpeaepafhlp736ekvq97vrh4"
  • "knowbe4-site-verification=b2f7c15d8e890e6d60f3c70d4ccd34ce"
  • "MS=ms30610086"
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