Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
institutoeh.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 14:53:34 UTC · ↺ Refresh
MX Hostnames
- mx31a.anti-spam-premium.com
- institutoeh-com.mail.protection.outlook.com
- mx31b.anti-spam-premium.com
MX Priorities
- mx31b.anti-spam-premium.com: 20
- mx31a.anti-spam-premium.com: 10
- institutoeh-com.mail.protection.outlook.com: 0
A / AAAA Records
- 35.212.22.137
Mail Server IPs
- 50.28.40.110 ↩ out31-rc.anti-spam-premium.com
- 67.227.207.17 ↩ out31-ts.anti-spam-premium.com
- 67.227.141.17 ↩ out31-ex.anti-spam-premium.com
- 67.225.227.151 ↩ out31-fs.anti-spam-premium.com
- 67.225.227.66 ↩ out31-ap.anti-spam-premium.com
- 67.227.144.103 ↩ out31-mx.anti-spam-premium.com
- 52.101.9.17 (no PTR)
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 2a01:111:f403:c901::1
- 2a01:111:f403:f902::2
- 2a01:111:f403:c922::
- 2a01:111:f403:c902::
SOA Record
Raw SOA
ns1.siteground.net root.giow1093.siteground.us 100246 86400 7200 3600000 86400
Primary NS (mname)
ns1.siteground.net
Admin Email (rname)
root@giow1093.siteground.us
Serial
100246
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns2.siteground.net
ns1.siteground.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:institutoeh.com.spf.auto.dnssmarthost.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; aspf=r; adkim=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 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
3 records- SPFv=spf1 include:spf.protection.outlook.com include:institutoeh.com.spf.auto.dnssmarthost.net -all
- google-site-verification=FBRfqJsbRLDGcFw8XDWIIhHEEd7K2-6W4j_gT8BUytM
- MS=ms71072285
Full email verification for institutoeh.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits