Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koito-czech.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 06:03:54 UTC · ↺ Refresh
MX Hostnames
- cx.spamfree.cz
- dx.spamfree.cz
- ax.virusfree.cz
- bx.virusfree.cz
MX Priorities
- cx.spamfree.cz: 12833
- bx.virusfree.cz: 12817
- ax.virusfree.cz: 12801
- dx.spamfree.cz: 12849
A / AAAA Records
- 185.66.36.4 ↩ vmd29.farma.gigaserver.cz
- 2a03:1e20::5:185:66:36:4 (no PTR)
Mail Server IPs
- 195.24.76.170 ↩ dq.spamfree.cz
- 2001:67c:15a3::d1 ↩ dx.spamfree.cz
- 89.187.156.46 ↩ bq.virusfree.cz
- 2001:67c:15a2::b1 ↩ bx.virusfree.cz
- 31.7.241.24 ↩ ax.virusfree.cz
- 2001:67c:15a1::a1 ↩ ax.virusfree.cz
SOA Record
Raw SOA
ns1.ignum.com hostmaster.ignum.cz 2026031201 10800 3600 604800 3600
Primary NS (mname)
ns1.ignum.com
Admin Email (rname)
hostmaster@ignum.cz
Serial
2026031201
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.ignum.com
ns2.ignum.cz
SPF Record
✓ Strict (-all)
v=spf1 include:spfsoft.virusfree.cz include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
default._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
2 records- SPFv=spf1 include:spfsoft.virusfree.cz include:spf.protection.outlook.com -all
- MS=ms67103519
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