Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cssoffice.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 07:31:33 UTC · ↺ Refresh
MX Hostnames
- cssoffice-com.mail.protection.outlook.com
MX Priorities
- cssoffice-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.17.145.110 (no PTR)
- 104.17.144.110 (no PTR)
- 2606:4700::6811:906e
- 2606:4700::6811:916e
Mail Server IPs
- 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 52.101.190.2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c944::1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 2a01:111:f403:c942::2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 2a01:111:f403:c942:: ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
jacob.ns.cloudflare.com dns.cloudflare.com 2398786476 10000 2400 604800 1800
Primary NS (mname)
jacob.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398786476
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
rosa.ns.cloudflare.com
jacob.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_u.cssoffice.com._spf.smart.ondmarc.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; sp=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=r; aspf=r; fo=1; rf=afrf; ri=3600
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
2 records- google-site-verification=E6W_h_wAso0HIekZ0dGISGIR-ZQdJ4zo6N8510YcWa0
- SPFv=spf1 include:_u.cssoffice.com._spf.smart.ondmarc.com ~all
Full email verification for cssoffice.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits