Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
highcaliber.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 18:59:28 UTC · ↺ Refresh
MX Hostnames
- highcaliber.com.1.arsmtp.com
- highcaliber.com.2.arsmtp.com
MX Priorities
- highcaliber.com.2.arsmtp.com: 20
- highcaliber.com.1.arsmtp.com: 10
A / AAAA Records
- 66.186.40.101 ↩ smtp05.highcaliber.com
Mail Server IPs
- 8.19.118.199 ↩ server265.appriver.com
- 8.31.233.102 ↩ server264.appriver.com
SOA Record
Raw SOA
ns19.worldnic.com namehost.worldnic.com 125080103 10800 3600 604800 3600
Primary NS (mname)
ns19.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125080103
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns20.worldnic.com
ns19.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf01.highcaliber.com include:exghost.com include:edgepilot.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:spf01.highcaliber.com include:exghost.com include:edgepilot.com -all
- MS=56BA460A744C41709BAD4622B78940D944C9590E
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