stairtek.com

Valid Email Server
Domain Lookup › stairtek.com

Domain Overview

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

Checked via [email protected] · 2026-03-24 17:45:48 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • us-smtp-inbound-1.mimecast.com: 10
  • us-smtp-inbound-2.mimecast.com: 20

A / AAAA Records

  • 3.138.92.100 ↩ ec2-3-138-92-100.us-east-2.compute.amazonaws.com
  • 18.218.49.0 ↩ ec2-18-218-49-0.us-east-2.compute.amazonaws.com
  • 3.134.4.63 ↩ ec2-3-134-4-63.us-east-2.compute.amazonaws.com

Mail Server IPs

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

SOA Record

Raw SOA ns-1168.awsdns-18.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1168.awsdns-18.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-628.awsdns-14.net
ns-1168.awsdns-18.org
ns-1794.awsdns-32.co.uk
ns-43.awsdns-05.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:mail.stairtekcs.ladesk.com ip4:66.161.206.10 -all
📊 DNS lookups: 2/10

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

4 records
  • atlassian-domain-verification=2mVWo8aa7frZmLknWbSmejft1hmRSJm4lrbtOAGYOuYZ9n43q6iyNQvLVesVBdca
  • duo_sso_verification=jW6xYaOhMKcZefGLvLA8nZzRqjGuVYVpN92kTszc7ZEDaASl1FurmCpUVndOEQjI
  • DMARCv=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
  • SPFv=spf1 include:us._netblocks.mimecast.com include:mail.stairtekcs.ladesk.com ip4:66.161.206.10 -all
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