ctdi.com

Valid Email Server
Domain Lookup › ctdi.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
ctdi.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-26 17:15:43 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 192.94.45.17 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ns-1036.awsdns-01.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1036.awsdns-01.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1884.awsdns-43.co.uk
ns-896.awsdns-48.net
ns-1036.awsdns-01.org
ns-173.awsdns-21.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:65.168.58.150/32 ip4:199.195.135.202/32 a:outboundmail.ctdi.com a:rdsmtp3.ctdi.com ip4:54.183.72.121/32 include:amazonses.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

9 records
  • _globalsign-domain-verification=6mDGKq3HFeF-XEwcKMXmQTeeABhGXPfW5cdywfXVej
  • apple-domain-verification=YemX7wMZWnrOPWcm
  • atlassian-domain-verification=jRA+BShk1Ap7UyF18J449f1qf7wlQPYlyjnO4FhjyhYnV+TfuZvsvLaB9gLaLpOI
  • duo_sso_verification=Wp6W2r1YRbUbPE5940wf9Cdl8UONNeIfe9qHVNzem227RwpsxJVhhRDiIt2BEytj
  • globalsign-domain-verification=32555D264C208F8CC14323607FAE599C
  • google-site-verification=F13CfVNlpPBp0YA1DYYKeQSIQ8P7oVHp5cdDUqfa_3Y
  • jamf-site-verification=TuQkU0fRrwjjunrGG3jlBQ
  • paloaltonetworks-site-verification=6ea2fab9beb2904504e566e90a2824b87c1af5f20899581c58dbdac5496079bb
  • SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:65.168.58.150/32 ip4:199.195.135.202/32 a:outboundmail.ctdi.com a:rdsmtp3.ctdi.com ip4:54.183.72.121/32 include:amazonses.com ~all
Full email verification for ctdi.com

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits