assuredptr.com

Valid Email Server
Domain Lookup › assuredptr.com

Domain Overview

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

Checked via [email protected] · 2026-03-19 22:21:11 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

  • 45.60.247.68 (no PTR)
  • 45.60.241.68 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ha1.markmonitor.zone hostmaster.markmonitor.com 2023060901 86400 3600 2592000 172800
Primary NS (mname)
ha1.markmonitor.zone
Admin Email (rname)
hostmaster@markmonitor.com
Serial
2023060901
Refresh
86400s
Retry
3600s
Expire
2592000s
Minimum TTL
172800s

Nameservers (NS)

ha2.markmonitor.zone
ha3.markmonitor.zone
ha4.markmonitor.zone
ha1.markmonitor.zone

SPF Record

✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → 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

2 records
  • SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ~all
  • MS=ms11503851
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