cornerstone.com

Valid Email Server
Domain Lookup › cornerstone.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cornerstone.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 13:42:54 UTC · ↺ Refresh

MX Hostnames

  • us-smtp-inbound-2.mimecast.com
  • us-smtp-inbound-1.mimecast.com

MX Priorities

  • us-smtp-inbound-2.mimecast.com: 10
  • us-smtp-inbound-1.mimecast.com: 10

A / AAAA Records

  • 23.185.0.253 (no PTR)
  • 2620:12a:8000::253 (no PTR)

Mail Server IPs

  • 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com

SOA Record

Raw SOA ns-1600.awsdns-08.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1600.awsdns-08.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-710.awsdns-24.net
ns-1200.awsdns-22.org
ns-1600.awsdns-08.co.uk
ns-245.awsdns-30.com

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:209.236.107.128/26 ip4:52.39.150.79/32 ip4:74.217.8.192/29 ip4:72.5.202.0/24 ip4:216.34.99.0/27 ip4:44.238.67.234/32 ip4:52.88.39.26/32 ip4:44.236.41.178/32 a:dnsma.accellion.com a:dnsus1.accellion.com a:dnsus2.accellion.com include:emailcc.com include:_spf.salesforce.com include:spf-us.vx-email.com include:us._netblocks.mimecast.com -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; pct=100;rua=mailto:[email protected], mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected], mailto:[email protected]

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

13 records
  • apple-domain-verification=h9003d86mQrxj6yC
  • 0ed1fe018a43574f5225654fe4bb38ff991a7f5079
  • tinfoil-site-verification: ec0887b754a1d3c726a9dd64dd27ca316ebe1f79=90abc6d393d332ee9169d92c4d595cf01ca613c8
  • SPFv=spf1 mx ip4:209.236.107.128/26 ip4:52.39.150.79/32 ip4:74.217.8.192/29 ip4:72.5.202.0/24 ip4:216.34.99.0/27 ip4:44.238.67.234/32 ip4:52.88.39.26/32 ip4:44.236.41.178/32 a:dnsma.accellion.com a:dnsus1.accellion.com a:dnsus2.accellion.com include:emailcc.com include:_spf.salesforce.com include:spf-us.vx-email.com include:us._netblocks.mimecast.com -all
  • anthropic-domain-verification-x2hws9=MV3OSqVz8rSTJuTixe6Sm8LOZ
  • logmein-verification-code=dc45c814-ed5c-46fe-8792-ea7250ac807e
  • MS=ms80142515
  • logmein-verification-code=e096c6f8-a6e5-4f8c-ae8f-071ffd9016da
  • MS=40AA123880A1121249E861D280B6BC1BA5EE990F
  • google-site-verification=S0sXqYR5uYv-Swlg2C7lC_J3Cn-mtRNlIPK9Z3YIOEI
  • box-domain-verification=db17851376435694cdb4e359df532c146771383fc565da096d00f87da7cfd39e
  • docusign=be827eea-1284-43e8-9d2f-cb864e4d046c
  • _ar5wsz5hz7sdilqnaksif0y7vh9lyrq
Full email verification for cornerstone.com

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