upol.cz

Valid Email Server
Domain Lookup › upol.cz

Domain Overview

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

Checked via [email protected] · 2026-03-14 03:57:44 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

  • cx.spamfree.cz: 12833
  • ax.virusfree.cz: 12801
  • bx.virusfree.cz: 12817
  • dx.spamfree.cz: 12849

A / AAAA Records

  • 158.194.230.160 ↩ aslf.upol.cz

Mail Server IPs

  • 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
  • 89.187.156.46 ↩ bq.virusfree.cz
  • 2001:67c:15a2::b1 ↩ bx.virusfree.cz

SOA Record

Raw SOA raven.upol.cz petv.cvt.upol.cz 2260313053 900 1800 3600000 86400
Primary NS (mname)
raven.upol.cz
Admin Email (rname)
petv@cvt.upol.cz
Serial
2260313053
Refresh
900s
Retry
1800s
Expire
3600000s
Minimum TTL
86400s

Nameservers (NS)

raven.upol.cz
nsa.ces.net
namer2.upol.cz

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:spf.protection.outlook.com ip4:158.194.0.0/16 ip6:2001:718:1401::/48 include:spf.smartemailing.cz include:spf.olc.cz ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 1 found
google._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google

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

All TXT Records

3 records
  • SPFv=spf1 include:_spf.google.com include:spf.protection.outlook.com ip4:158.194.0.0/16 ip6:2001:718:1401::/48 include:spf.smartemailing.cz include:spf.olc.cz ~all
  • 3zNARbt6ooYOB+Lzg3XaA39D3JeK4QmZ+FyeRVi9ST64p23zqvAdD8E3UVnBfWw6pa9N7/Wr8OquNBLFV+/o9Q==
  • google-site-verification=mIZoGsUJP6Pyd-4wB5ECvwKTmZRnPsjJfJPbBvZnoqM
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