Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
one-sky.ca
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 11:32:49 UTC · ↺ Refresh
MX Hostnames
- mx-cluster-ca-fallback.hornetsecurity.com
- mx-cluster-ca03.hornetsecurity.com
- mx-cluster-ca02.hornetsecurity.com
- mx-cluster-ca01.hornetsecurity.com
MX Priorities
- mx-cluster-ca02.hornetsecurity.com: 20
- mx-cluster-ca03.hornetsecurity.com: 30
- mx-cluster-ca-fallback.hornetsecurity.com: 40
- mx-cluster-ca01.hornetsecurity.com: 10
A / AAAA Records
- 144.217.225.76 ↩ hcu-76-3006.hcu.cloud
Mail Server IPs
- 108.163.133.231 ↩ mx-cluster-ca01.hornetsecurity.com
- 209.172.38.68 ↩ hsmx01-hz11.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
SOA Record
Raw SOA
ca.nameserver01.com dns-admin.hcu.cloud 2026031202 3600 1800 1209600 86400
Primary NS (mname)
ca.nameserver01.com
Admin Email (rname)
dns-admin@hcu.cloud
Serial
2026031202
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
us.nameserver03.com
uk.nameserver04.com
ca.nameserver01.com
ca.nameserver02.com
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=one-sky.ca.spf.hornetdmarc.com
📊 DNS lookups: 1/10
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=60; fo=0:1:d:s; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
⚠ Policy applies to 60% of failing messages only
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
s1._domainkey
✓ Public key: 216 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
3 records- MS=ms61667734
- brevo-code:93a2c3c1f927e94ee99fdae0f8c42559
- SPFv=spf1 redirect=one-sky.ca.spf.hornetdmarc.com
Full email verification for one-sky.ca
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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