Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gbnetworks.mx
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 16:28:00 UTC · ↺ Refresh
MX Hostnames
- mx1.hc4115-45.iphmx.com
- mx2.hc4115-45.iphmx.com
MX Priorities
- mx2.hc4115-45.iphmx.com: 10
- mx1.hc4115-45.iphmx.com: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 139.138.47.241 ↩ esa2.hc4115-45.iphmx.com
- 207.54.93.246 ↩ esa1.hc4115-45.iphmx.com
SOA Record
Raw SOA
ns.rackspace.com lescudero.gbnetworks.mx 1742413462 21600 3600 1814400 300
Primary NS (mname)
ns.rackspace.com
Admin Email (rname)
lescudero@gbnetworks.mx
Serial
1742413462
Refresh
21600s
Retry
3600s
Expire
1814400s
Minimum TTL
300s
Nameservers (NS)
dns1.stabletransit.com
dns2.stabletransit.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com exists:%{i}.spf.hc4115-45.iphmx.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; pct=10
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
⚠ Policy applies to 10% of failing messages only
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- duo_sso_verification=pBWqflbejbUzV7XAk4o5IERwIuqA8T1LEIqMORfy0jsNXh7WeeYbVsH2cg3L5mkV
- google-site-verification=TqlJAweeh7UkW4nGdKtcW-D-obJYSYyx9GG3YHfpghM
- apple-domain-verification=jGmGR5hGcGH3X9ad
- SPFv=spf1 include:_spf.google.com exists:%{i}.spf.hc4115-45.iphmx.com -all
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