Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
env.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-14 02:12:27 UTC · ↺ Refresh
MX Hostnames
- mx1.mzp.cz
- mx2.mzp.cz
MX Priorities
- mx1.mzp.cz: 5
- mx2.mzp.cz: 10
A / AAAA Records
- 193.84.245.16 ↩ extn16.env.cz
- 2001:af0:8001:2a2a::16 (no PTR)
Mail Server IPs
- 23.90.105.186 ↩ esa2.hc1982-32.eu.iphmx.com
- 23.90.110.118 ↩ esa1.hc1982-32.eu.iphmx.com
- 2620:101:2012:300::20 ↩ esa2.hc1982-32.eu.iphmx.com
- 2620:101:2011:300::21 ↩ esa1.hc1982-32.eu.iphmx.com
SOA Record
Raw SOA
ns.env.cz hostmaster.env.cz 2025083123 3600 3600 604800 86400
Primary NS (mname)
ns.env.cz
Admin Email (rname)
hostmaster@env.cz
Serial
2025083123
Refresh
3600s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns2.gts.cz
ns.env.cz
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.env.cz include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
1 record- SPFv=spf1 include:_spf.env.cz include:spf.protection.outlook.com -all
Full email verification for env.cz
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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