Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stob.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 19:34:23 UTC · ↺ Refresh
MX Hostnames
- true1.webstep.net
MX Priorities
- true1.webstep.net: 11
A / AAAA Records
- 136.243.228.202 ↩ true1.trueapps.cz
Mail Server IPs
- 136.243.228.202 ↩ true1.trueapps.cz
- 2a01:4f8:2220:3fe4:1::2 ↩ true1.trueapps.cz
SOA Record
Raw SOA
ns1.ignum.com hostmaster.ignum.cz 2026032301 10800 3600 604800 360
Primary NS (mname)
ns1.ignum.com
Admin Email (rname)
hostmaster@ignum.cz
Serial
2026032301
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
360s
Nameservers (NS)
ns1.ignum.com
ns2.ignum.cz
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a:mailers.mail-komplet.cz a:mail.stob.cz include:sendgrid.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
default._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- google-site-verification=My5rIxSlLsuCaRCb9hVxKHMFDsRKxmCJ5SQpMXBhaAE
- SPFv=spf1 mx a:mailers.mail-komplet.cz a:mail.stob.cz include:sendgrid.net ~all
- google-site-verification=9jc_TOK4L5BWKbws6O8idmfrkuBG26rLH6mf3cXvSj4
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