Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
smart-city-factory.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 12:25:50 UTC · ↺ Refresh
MX Hostnames
- cf064188837334b9.mx1.emailprofi.seznam.cz
- cf064188837334b9.mx2.emailprofi.seznam.cz
MX Priorities
- cf064188837334b9.mx1.emailprofi.seznam.cz: 20
- cf064188837334b9.mx2.emailprofi.seznam.cz: 10
A / AAAA Records
- 20.113.86.61 (no PTR)
Mail Server IPs
- 77.75.77.56 ↩ wildcard.mx1.emailprofi.seznam.cz
- 2a02:598:2::1056 ↩ wildcard.mx1.emailprofi.seznam.cz
- 77.75.77.146 ↩ wildcard.mx2.emailprofi.seznam.cz
- 2a02:598:2::1146 ↩ wildcard.mx2.emailprofi.seznam.cz
SOA Record
Raw SOA
ns02.smart-city-factory.com hostnaster.smart-city-factory.com 2022022035 28800 7200 1209600 3600
Primary NS (mname)
ns02.smart-city-factory.com
Admin Email (rname)
hostnaster@smart-city-factory.com
Serial
2022022035
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns02.smart-city-factory.com
ns01.smart-city-factory.com
SPF Record
✓ Strict (-all)
v=spf1 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: 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.protection.outlook.com -all
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