nitrc.org

Valid Email Server
Domain Lookup › nitrc.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
nitrc.org
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-14 01:37:11 UTC · ↺ Refresh

MX Hostnames

  • mxbackup1.junkemailfilter.com
  • mail.nitrc.org
  • mxbackup2.junkemailfilter.com

MX Priorities

  • mail.nitrc.org: 10
  • mxbackup1.junkemailfilter.com: 20
  • mxbackup2.junkemailfilter.com: 30

A / AAAA Records

  • 166.117.163.109 ↩ a1fc19117895be731.awsglobalaccelerator.com
  • 15.197.243.99 ↩ a1fc19117895be731.awsglobalaccelerator.com

Mail Server IPs

  • 52.3.190.103 ↩ nitrc.org
  • 184.105.182.145 ↩ 145-he.filtered.junkemailfilter.com
  • 184.105.182.215 (no PTR)
  • 184.105.182.226 (no PTR)
  • 184.105.182.225 (no PTR)
  • 184.105.182.227 (no PTR)
  • 184.105.182.217 (no PTR)
  • 184.105.182.216 (no PTR)

SOA Record

Raw SOA ns-1312.awsdns-36.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1312.awsdns-36.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-667.awsdns-19.net
ns-1312.awsdns-36.org
ns-1850.awsdns-39.co.uk
ns-424.awsdns-53.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:3.211.226.47 ip4:52.3.190.103 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; pct=100; sp=none
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

3 records
  • SPFv=spf1 ip4:3.211.226.47 ip4:52.3.190.103 -all
  • google-site-verification=N1w53G9yrWuKHQRl1yPBNIW_8uHr8Ol1uhE-gJOnyiw
  • google-site-verification=azioUmRNjacKroBvj5wBdahvRD9xavVvNhbruMKRxqo
Full email verification for nitrc.org

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