nrtinc.com

Valid Email Server
Domain Lookup › nrtinc.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
nrtinc.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 22:25:40 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

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

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
  • 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com

SOA Record

Raw SOA ns-1593.awsdns-07.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1593.awsdns-07.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-885.awsdns-46.net
ns-1225.awsdns-25.org
ns-1593.awsdns-07.co.uk
ns-394.awsdns-49.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.anywhere.re -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 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

4 records
  • docusign=c29cdeb9-1281-4fd8-b46f-3a504c63c140
  • m0629xl7vnt0gzp4nxxchz2nnqxgph9k
  • SPFv=spf1 include:spf.anywhere.re -all
  • SJNUemC3tvD3Wp7b5OKIedkpIaPy2R5Tj1xARHHBdHkInqrSuGgf90VLrVwcSyRfz+BOWKJ5RJUkLvc8o7Ws/g==
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