polystell.com.br

Valid Email Server
Domain Lookup › polystell.com.br

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
polystell.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 16:57:51 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 187.110.162.186 ↩ server25.rapidcloud.com.br

Mail Server IPs

  • 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
  • 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
  • 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
  • 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com

SOA Record

Raw SOA master.rapidcloud.com.br datacenter.rapidcloud.com.br 2026031401 3600 1800 1209600 86400
Primary NS (mname)
master.rapidcloud.com.br
Admin Email (rname)
datacenter@rapidcloud.com.br
Serial
2026031401
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

master.rapidcloud.com.br
slave.rapidcloud.com.br

SPF Record

✓ Strict (-all)
v=spf1 ip4:187.110.162.186 include:relay.mailbaby.net include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default

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

All TXT Records

2 records
  • openai-domain-verification=dv-L3caoADGLNb3jZt1ZAIdmqx8
  • SPFv=spf1 ip4:187.110.162.186 include:relay.mailbaby.net include:spf.protection.outlook.com -all
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