Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
aeromec.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 17:00:37 UTC · ↺ Refresh
MX Hostnames
- ms.aeromec.cz
- relay.contactel.cz
MX Priorities
- relay.contactel.cz: 20
- ms.aeromec.cz: 10
A / AAAA Records
- 93.185.104.25 ↩ www5.tophosting.cz
Mail Server IPs
- 193.85.201.247 ↩ cbu.pvtnet.cz
- 193.85.203.117 ↩ ms.altech.cz
SOA Record
Raw SOA
ns.contactel.cz hostmaster.cz.net 2024052300 28800 7200 604800 86400
Primary NS (mname)
ns.contactel.cz
Admin Email (rname)
hostmaster@cz.net
Serial
2024052300
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns2.contactel.cz
ns.contactel.cz
SPF Record
✓ Strict (-all)
v=spf1 mx a include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; fo=1; pct=100; ri=86400
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 1 found
selector1._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
3 records- MS=ms90689761
- SPFv=spf1 mx a include:spf.protection.outlook.com -all
- DXo0DOYljjH1/NckE2Vwbt5zO+SQgqucQiYCBK9SQqyyVE1lkaM4wm4DKbHYVQzYkF3YBSKIJWc6AxWGBc69aA==
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