Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rcbinv.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 03:05:19 UTC · ↺ Refresh
MX Hostnames
- rcbinv-com-br.mail.protection.outlook.com
MX Priorities
- rcbinv-com-br.mail.protection.outlook.com: 10
A / AAAA Records
- 104.26.3.169 (no PTR)
- 172.67.75.76 (no PTR)
- 104.26.2.169
- 2606:4700:20::681a:3a9
- 2606:4700:20::681a:2a9
- 2606:4700:20::ac43:4b4c
Mail Server IPs
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.9.11 ↩ mail-bl2pr04cu00103.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
joan.ns.cloudflare.com dns.cloudflare.com 2399877363 10000 2400 604800 1800
Primary NS (mname)
joan.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399877363
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
joan.ns.cloudflare.com
mark.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ip4:200.198.190.181 ip4:179.191.75.130 ip4:200.198.190.180 ip4:186.202.95.134 ip4:201.86.126.178 ip4:201.86.126.179 include:sparkpostmail.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
2 records- SPFv=spf1 include:spf.protection.outlook.com ip4:200.198.190.181 ip4:179.191.75.130 ip4:200.198.190.180 ip4:186.202.95.134 ip4:201.86.126.178 ip4:201.86.126.179 include:sparkpostmail.com ~all
- MS=ms39008698
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