Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
uc.ac.cr
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-03 07:49:05 UTC · ↺ Refresh
MX Hostnames
- uc-ac-cr.mail.protection.outlook.com
MX Priorities
- uc-ac-cr.mail.protection.outlook.com: 30
A / AAAA Records
- 100.52.63.62 ↩ ec2-100-52-63-62.compute-1.amazonaws.com
Mail Server IPs
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
elly.ns.cloudflare.com dns.cloudflare.com 2400391812 10000 2400 604800 1800
Primary NS (mname)
elly.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400391812
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
woz.ns.cloudflare.com
elly.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
7 records- brevo-code:dd611c1e5d0988a65aa3be6a6cae2294
- sophos-domain-verification=141c58cf34617f3d233a4eba9fa5ec5d066d9e8a
- SPFv=spf1 include:spf.protection.outlook.com ~all
- 3pno54e1ma0e8ag1dqul6r2c7u
- 8l4or5rb2ghus2m7iv18iufc3c
- MS=ms41384578
- apple-domain-verification=UcZ7a3KtsP0l3SaU
Full email verification for uc.ac.cr
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits