Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
highmarkconstruction.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 20:28:18 UTC · ↺ Refresh
MX Hostnames
- highmarkconstruction-com.inbound.emailservice.co
- highmarkconstruction-com.inbound.emailservice.io
- highmarkconstruction-com.inbound.emailservice.cc
MX Priorities
- highmarkconstruction-com.inbound.emailservice.io: 10
- highmarkconstruction-com.inbound.emailservice.cc: 20
- highmarkconstruction-com.inbound.emailservice.co: 30
A / AAAA Records
- 104.21.23.21 (no PTR)
- 172.67.208.108 (no PTR)
- 2606:4700:3032::6815:1715 (no PTR)
- 2606:4700:3033::ac43:d06c (no PTR)
Mail Server IPs
- 54.211.15.143 ↩ ec2-54-211-15-143.compute-1.amazonaws.com
- 107.21.241.201 ↩ ec2-107-21-241-201.compute-1.amazonaws.com
- 52.44.33.109 ↩ ec2-52-44-33-109.compute-1.amazonaws.com
SOA Record
Raw SOA
leah.ns.cloudflare.com dns.cloudflare.com 2398902308 10000 2400 604800 1800
Primary NS (mname)
leah.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398902308
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lloyd.ns.cloudflare.com
leah.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:mailgun.org ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- google-site-verification=Y0QNCral8I7VIavDyDv_y9klIGJjc0-bG1OTmc-vXhU
- SPFv=spf1 include:mailgun.org ~all
- SPFv=spf1 include:spf.us.emailservice.io include:sendgrid.net include:spf.emailsignatures365.com include:spf.constantcontact.com ~all
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