jrtech.cz

Valid Email Server
Domain Lookup › jrtech.cz

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jrtech.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-14 01:52:27 UTC · ↺ Refresh

MX Hostnames

  • ax.virusfree.cz
  • bx.virusfree.cz
  • cx.spamfree.cz
  • dx.spamfree.cz

MX Priorities

  • bx.virusfree.cz: 20
  • cx.spamfree.cz: 30
  • dx.spamfree.cz: 40
  • ax.virusfree.cz: 10

A / AAAA Records

  • 82.142.74.11 ↩ cms.1webit.cz

Mail Server IPs

  • 89.187.156.46 ↩ bq.virusfree.cz
  • 2001:67c:15a2::b1 ↩ bx.virusfree.cz
  • 195.24.76.170 ↩ dq.spamfree.cz
  • 2001:67c:15a3::d1 ↩ dx.spamfree.cz
  • 31.7.241.24 ↩ ax.virusfree.cz
  • 2001:67c:15a1::a1 ↩ ax.virusfree.cz

SOA Record

Raw SOA ns1.websupport.cz admin.websupport.cz 1674724658 7200 2048 1048576 2560
Primary NS (mname)
ns1.websupport.cz
Admin Email (rname)
admin@websupport.cz
Serial
1674724658
Refresh
7200s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s

Nameservers (NS)

ns1.websupport.cz
ns2.websupport.cz
ns3.websupport.eu

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:81.0.217.242 ip4:81.0.217.248 ip4:195.39.6.222 ip4:194.213.207.98 ~all
📊 DNS lookups: 0/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 ip4:81.0.217.242 ip4:81.0.217.248 ip4:195.39.6.222 ip4:194.213.207.98 ~all
  • google-site-verification=U8nAjC-gHBzGRCkTqCaoUgG8OWTRnYDrv07vgawJGkg
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