Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gdmrefrigeration.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 11:00:50 UTC · ↺ Refresh
MX Hostnames
- mail3.linknowmedia.cloud
- mail4.linknowmedia.cloud
MX Priorities
- mail3.linknowmedia.cloud: 0
- mail4.linknowmedia.cloud: 0
A / AAAA Records
- 208.94.107.6 ↩ web1.linknowmedia.com
Mail Server IPs
- 208.94.107.75 ↩ mail3.linknowmedia.cloud
- 15.222.161.152 ↩ ec2-15-222-161-152.ca-central-1.compute.amazonaws.com
SOA Record
Raw SOA
ns1.linknowmedia.com sysadmin.linknowmedia.com 2026030701 3600 1800 1209600 86400
Primary NS (mname)
ns1.linknowmedia.com
Admin Email (rname)
sysadmin@linknowmedia.com
Serial
2026030701
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.linknowmedia.com
ns2.linknowmedia.com
SPF Record
✓ Strict (-all)
v=spf1 include:relayhost1.linknowmedia.cloud include:relayhost2.linknowmedia.cloud ip4:208.94.107.6 ip4:192.175.104.6 +a +mx +ip4:207.198.110.104 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 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
1 record- SPFv=spf1 include:relayhost1.linknowmedia.cloud include:relayhost2.linknowmedia.cloud ip4:208.94.107.6 ip4:192.175.104.6 +a +mx +ip4:207.198.110.104 -all
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