Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cafsa.fi.cr
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 23:46:54 UTC · ↺ Refresh
MX Hostnames
- cafsa-fi-cr.mail.protection.outlook.com
MX Priorities
- cafsa-fi-cr.mail.protection.outlook.com: 0
A / AAAA Records
- 186.177.87.50 (no PTR)
Mail Server IPs
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.cafsa.fi.cr keymaster.cafsa.fi.cr 2026022104 7200 3600 1209600 3600
Primary NS (mname)
ns.cafsa.fi.cr
Admin Email (rname)
keymaster@cafsa.fi.cr
Serial
2026022104
Refresh
7200s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns.cafsa.fi.cr
ns102.cloudns.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none; ruf=mailto:[email protected]; rf=afrf; pct=100; ri=86400
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._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
4 records- MS=ms31350762
- SPFv=spf1 include:spf.protection.outlook.com -all
- iContact905516
- duo_sso_verification=5tL1f91lGCtM7WCxmoXFVtOvdkwLbbuLOIfqaO0w54NDrcMVUY1Q58mYHa9k6JUk
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for cafsa.fi.cr
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits