Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
3r.cr
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 23:29:20 UTC · ↺ Refresh
MX Hostnames
- mail.3r.cr
- mail2.3r.cr
- mail1.3r.cr
MX Priorities
- mail2.3r.cr: 30
- mail1.3r.cr: 20
- mail.3r.cr: 10
A / AAAA Records
- 131.108.37.214 (no PTR)
Mail Server IPs
- 190.108.72.68 ↩ mail2.sitek.cr
- 200.91.163.181 ↩ mail2.sitek.cr
SOA Record
Raw SOA
ns10.sitek.cr soporte.sitek.cr 2024092333 1800 600 1728000 3600
Primary NS (mname)
ns10.sitek.cr
Admin Email (rname)
soporte@sitek.cr
Serial
2024092333
Refresh
1800s
Retry
600s
Expire
1728000s
Minimum TTL
3600s
Nameservers (NS)
ns10.sitek.cr
ns5.sitek.cr
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:200.91.163.181 ip4:190.108.72.68 ip4:186.177.20.202 a mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; sp=reject
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- facebook-domain-verification=blnwkt331ojv63utq0160aku9tah5m
- SPFv=spf1 ip4:200.91.163.181 ip4:190.108.72.68 ip4:186.177.20.202 a mx ~all
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