Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kostazul.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 07:43:44 UTC · ↺ Refresh
MX Hostnames
- mx-02-us-east-2.prod.hydra.sophos.com
- mx-01-us-east-2.prod.hydra.sophos.com
MX Priorities
- mx-02-us-east-2.prod.hydra.sophos.com: 20
- mx-01-us-east-2.prod.hydra.sophos.com: 10
A / AAAA Records
- 23.227.38.65 ↩ myshopify.com
- 2620:127:f00f:5:: (no PTR)
Mail Server IPs
- 18.218.105.173 ↩ ec2-18-218-105-173.us-east-2.compute.amazonaws.com
- 3.135.48.136 ↩ ec2-3-135-48-136.us-east-2.compute.amazonaws.com
- 18.189.107.171 ↩ ec2-18-189-107-171.us-east-2.compute.amazonaws.com
SOA Record
Raw SOA
ns1.hover.com dnsmaster.hover.com 1769441131 1800 900 604800 300
Primary NS (mname)
ns1.hover.com
Admin Email (rname)
dnsmaster@hover.com
Serial
1769441131
Refresh
1800s
Retry
900s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns2.hover.com
ns1.hover.com
ns3.hover.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a include:_spf.prod.hydra.sophos.com include:sendgrid.net ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; fo=0; pct=50
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
⚠ Policy applies to 50% of failing messages only
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms29874723
- sophos-domain-verification=0a2d1cf800bf88b2a3f974734de16169481f59dd
- SPFv=spf1 a include:_spf.prod.hydra.sophos.com include:sendgrid.net ~all
Full email verification for kostazul.com
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