cornerstonesoftware.com

Valid Email Server
Domain Lookup › cornerstonesoftware.com

Domain Overview

DNS: ✓ 20d ago Checker: ✓ 20d ago
cornerstonesoftware.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-20 22:52:44 UTC · ↺ Refresh

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MX Hostnames

  • aspmx3.googlemail.com
  • aspmx.l.google.com
  • aspmx2.googlemail.com
  • alt1aspmx.l.google.com
  • alt2aspmx.l.google.com

MX Priorities

  • aspmx3.googlemail.com: 50
  • aspmx.l.google.com: 10
  • alt1aspmx.l.google.com: 20
  • alt2aspmx.l.google.com: 30
  • aspmx2.googlemail.com: 40

A / AAAA Records

  • 198.22.44.232 (no PTR)

Mail Server IPs

  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 142.251.167.26 ↩ ww-in-f26.1e100.net
  • 2607:f8b0:4004:c1d::1a ↩ ww-in-f26.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)

SOA Record

Raw SOA butte.corsof.com hostmaster.corsof.com 2026022500 1800 500 3024000 600
Primary NS (mname)
butte.corsof.com
Admin Email (rname)
hostmaster@corsof.com
Serial
2026022500
Refresh
1800s
Retry
500s
Expire
3024000s
Minimum TTL
600s

Nameservers (NS)

ns2.corsof.com
butte.corsof.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a ip4:198.22.44.0/24 ip4:216.177.19.0/24 ip4:173.13.76.25/32 ?include:hubspot.com ?include:mailgun.org ?include:salesforce.com include:_spf.google.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 a ip4:198.22.44.0/24 ip4:216.177.19.0/24 ip4:173.13.76.25/32 ?include:hubspot.com ?include:mailgun.org ?include:salesforce.com include:_spf.google.com ~all
  • MS=7A8A13046B67FCD1BA3B395DB67BF0681493DD3B
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