cchdc.com.br

Valid Email Server
Domain Lookup › cchdc.com.br

Domain Overview

DNS: ✓ 20d ago Checker: ✓ 20d ago
cchdc.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 22:50:10 UTC · ↺ Refresh

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MX Hostnames

  • cchdc-com-br.mail.protection.outlook.com

MX Priorities

  • cchdc-com-br.mail.protection.outlook.com: 0

A / AAAA Records

  • 104.21.26.254 (no PTR)
  • 172.67.139.195 (no PTR)
  • 2606:4700:3032::6815:1afe
  • 2606:4700:3037::ac43:8bc3

Mail Server IPs

  • 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
  • 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
  • 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
  • 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:f903:: (no PTR)
  • 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com

SOA Record

Raw SOA sima.ns.cloudflare.com dns.cloudflare.com 2404361532 10000 2400 604800 1800
Primary NS (mname)
sima.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2404361532
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

simon.ns.cloudflare.com
sima.ns.cloudflare.com

SPF Record

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

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

3 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms77065796
  • amazonses:Y5JydwtjPs3MXNqys9c8UX21aC7ZnXD+4S1ANSYBewI=
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