Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
info-biz.edu.pl
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 05:11:23 UTC · ↺ Refresh
MX Hostnames
- mx1.perfect-net.pl
- mx2.perfect-net.pl
MX Priorities
- mx1.perfect-net.pl: 10
- mx2.perfect-net.pl: 20
A / AAAA Records
- 185.144.174.5 ↩ mars.perfect.net.pl
Mail Server IPs
- 185.144.174.1 ↩ merkury.perfect.net.pl
- 185.144.174.4 ↩ wenus.perfect.net.pl
SOA Record
Raw SOA
merkury.perfect-net.pl dns.perfect-net.pl 2025072201 21600 7200 1209600 86400
Primary NS (mname)
merkury.perfect-net.pl
Admin Email (rname)
dns@perfect-net.pl
Serial
2025072201
Refresh
21600s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.perfect-net.pl
ns2.perfect-net.pl
SPF Record
✓ Strict (-all)
v=spf1 ip4:185.144.174.0/28 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; pct=100; rua=mailto:[email protected]; fo=1
~ 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
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:185.144.174.0/28 -all
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