Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
trestto.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 17:43:12 UTC · ↺ Refresh
MX Hostnames
- trestto-com-br.mail.protection.outlook.com
MX Priorities
- trestto-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 177.47.6.234 ↩ static.177.47.6.234.datacenter1.com.br
Mail Server IPs
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-33.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-33.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-33.azure-dns.info
ns1-33.azure-dns.com
ns2-33.azure-dns.net
ns3-33.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
4 records- openai-domain-verification=dv-D0cyxnSh0MvhU8bRuI38vURt
- be40t67017giituo05h7kd7cl
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
- vguf6vuan2m4f6r4a080kbpcit
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