Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
insper.edu.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 20:31:17 UTC · ↺ Refresh
MX Hostnames
- esa2.hc2847-56.iphmx.com
- esa1.hc2847-56.iphmx.com
MX Priorities
- esa2.hc2847-56.iphmx.com: 20
- esa1.hc2847-56.iphmx.com: 0
A / AAAA Records
- 186.232.61.70 (no PTR)
Mail Server IPs
- 216.71.140.122 ↩ esa2.hc2847-56.iphmx.com
- 216.71.142.170 ↩ esa1.hc2847-56.iphmx.com
SOA Record
Raw SOA
ns1-07.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-07.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-07.azure-dns.info
ns1-07.azure-dns.com
ns2-07.azure-dns.net
ns3-07.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:186.232.61.4 ip4:186.232.61.155 ip4:216.71.142.170 ip4:216.71.140.122 ip4:54.236.90.147 include:spf.protection.outlook.com include:spf1.auinmeio.com.br include:spf2.auinmeio.com.br include:mh.blackboard.com include:spf.mandrillapp.com include:20762974.spf02.hubspotemail.net include:rp.oracleemaildelivery.com include:amazonses.com -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._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
8 records- onetrust-domain-verification=6670e4d8a6fc47a6815676c4f7feadca
- _globalsign-domain-verification=f7GV9SM_UdbsRVqwvVTy-qb6lGPg0R8ECVzJAt6Dj1
- docusign=35772dbb-fa6e-45af-8233-8b69e5a50563
- openai-domain-verification=dv-ovAENxhzZ9tknoMONHXdJtJx
- openai-domain-verification=dv-D9dLOwXTOjKmJO9vAfyCLU3O
- 46achbu7njmtv7isbdenqq2eqb
- SPFv=spf1 ip4:186.232.61.4 ip4:186.232.61.155 ip4:216.71.142.170 ip4:216.71.140.122 ip4:54.236.90.147 include:spf.protection.outlook.com include:spf1.auinmeio.com.br include:spf2.auinmeio.com.br include:mh.blackboard.com include:spf.mandrillapp.com include:20762974.spf02.hubspotemail.net include:rp.oracleemaildelivery.com include:amazonses.com -all
- google-site-verification=om-VAK0ARkiETjsyDb0JPvsSoxMd128pqts24aQuAR8
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