Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
csgm.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-14 03:18:47 UTC · ↺ Refresh
MX Hostnames
- ax.virusfree.cz
- cx.spamfree.cz
- dx.spamfree.cz
- bx.virusfree.cz
MX Priorities
- dx.spamfree.cz: 40
- ax.virusfree.cz: 10
- bx.virusfree.cz: 20
- cx.spamfree.cz: 30
A / AAAA Records
- 76.76.21.21 (no PTR)
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
jay.ns.cloudflare.com dns.cloudflare.com 2397851977 10000 2400 604800 1800
Primary NS (mname)
jay.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397851977
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
jay.ns.cloudflare.com
kayleigh.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:185.10.87.192 ip4:195.39.39.102 ip4:212.80.64.74 ip4:185.10.87.202 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
4 records- SPFv=spf1 ip4:185.10.87.192 ip4:195.39.39.102 ip4:212.80.64.74 ip4:185.10.87.202 include:spf.protection.outlook.com -all
- MS=ms96003887
- apple-domain-verification=3UBhcihMr8g2GWMo
- atlassian-domain-verification=VFS77BqhnFdh5DtFGp0wa866kKa1MmEjROf5HQ1Vd0bCPUuytkydfEvlMbdKjWbN
Full email verification for csgm.cz
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