Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
podolinsky.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 02:27:39 UTC · ↺ Refresh
MX Hostnames
- mx.runbox.com
MX Priorities
- mx.runbox.com: 10
A / AAAA Records
- 66.6.44.4 (no PTR)
Mail Server IPs
- 185.226.149.25 ↩ aibo.runbox.com
SOA Record
Raw SOA
ns1.ignum.com hostmaster.ignum.cz 2026030801 10800 3600 604800 3600
Primary NS (mname)
ns1.ignum.com
Admin Email (rname)
hostmaster@ignum.cz
Serial
2026030801
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.ignum.cz
ns1.ignum.com
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=spf.runbox.com
📊 DNS lookups: 1/10
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 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
2 records- google-site-verification=KbO7-50joQxWlAygVVrjUnpAWdMAd-TXGwbPknyjeNk
- SPFv=spf1 redirect=spf.runbox.com
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for podolinsky.cz
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits