csr-bos.com

Valid Email Server
Domain Lookup › csr-bos.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
csr-bos.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 14:43:43 UTC · ↺ Refresh

MX Hostnames

  • csrbos-com0i.mail.protection.outlook.com

MX Priorities

  • csrbos-com0i.mail.protection.outlook.com: 10

A / AAAA Records

  • 16.182.42.117 ↩ s3-website-us-east-1.amazonaws.com
  • 52.216.214.245 ↩ s3-website-us-east-1.amazonaws.com
  • 52.216.53.253
  • 16.15.191.141
  • 52.217.173.117
  • 16.15.202.167
  • 16.15.252.72
  • 54.231.131.149

Mail Server IPs

  • 52.101.9.11 ↩ mail-bl2pr04cu00103.inbound.protection.outlook.com
  • 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
  • 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
  • 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
  • 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
  • 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA ns-161.awsdns-20.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-161.awsdns-20.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1460.awsdns-54.org
ns-161.awsdns-20.com
ns-1934.awsdns-49.co.uk
ns-866.awsdns-44.net

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

✗ 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

5 records
  • 4JKLPT9OSQPUF19VAKFL5DDN6T
  • 60qlncedb0hgtnpcab3t6uv4hq
  • MS=ms70907950
  • notokenfound
  • SPFv=spf1 include:spf.protection.outlook.com -all
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