Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
esen.edu.sv
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 15:39:26 UTC · ↺ Refresh
MX Hostnames
- esen-edu-sv.mail.protection.outlook.com
MX Priorities
- esen-edu-sv.mail.protection.outlook.com: 0
A / AAAA Records
- 38.7.14.67 (no PTR)
- 13.90.228.212 (no PTR)
Mail Server IPs
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
a.ns.esen.edu.sv hostmaster 16276 86400 900 86400 300
Primary NS (mname)
a.ns.esen.edu.sv
Admin Email (rname)
hostmaster
Serial
16276
Refresh
86400s
Retry
900s
Expire
86400s
Minimum TTL
300s
Nameservers (NS)
b.ns.esen.edu.sv
a.ns.esen.edu.sv
a-ns
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:9414166.spf10.hubspotemail.net include:sendgrid.net ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; pct=100; p=reject; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; ri=86400; aspf=s; adkim=s; fo=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._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- SPFv=spf1 include:spf.protection.outlook.com include:9414166.spf10.hubspotemail.net include:sendgrid.net ~all
- brevo-code:09357c2630559d902817770f34dbf0b1
- globalsign-domain-verification=BZPje3d8m10S-5EWCA3NYQr7fO3jR_m1ZEx8JOIkBo
- google-site-verification=7wgSZXpqmrsUbwLM_IVQEGWUCxoXc5C9Mp6CsPkj4_M
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