theoreminc.net

Valid Email Server
Domain Lookup › theoreminc.net

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
theoreminc.net
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 21:09:24 UTC · ↺ Refresh

MX Hostnames

  • d291318b.ess.barracudanetworks.com
  • d291318a.ess.barracudanetworks.com

MX Priorities

  • d291318a.ess.barracudanetworks.com: 0
  • d291318b.ess.barracudanetworks.com: 0

A / AAAA Records

  • 54.211.204.126 ↩ ec2-54-211-204-126.compute-1.amazonaws.com

Mail Server IPs

  • 209.222.82.255 ↩ mail.ess.barracuda.com
  • 209.222.82.252 ↩ mail.ess.barracuda.com
  • 209.222.82.253 ↩ mail.ess.barracuda.com

SOA Record

Raw SOA pdns95.ultradns.com ryan.theoreminc.net 2016120699 10800 900 2419200 10800
Primary NS (mname)
pdns95.ultradns.com
Admin Email (rname)
ryan@theoreminc.net
Serial
2016120699
Refresh
10800s
Retry
900s
Expire
2419200s
Minimum TTL
10800s

Nameservers (NS)

pdns95.ultradns.com
pdns95.ultradns.net
pdns95.ultradns.org
pdns95.ultradns.biz

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:97.107.175.74/32 ip4:97.107.175.73/32 ip4:148.77.10.216/32 include:mailgun.org include:aspmx.pardot.com include:49620510.spf08.hubspotemail.net include:spf.ess.barracudanetworks.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict 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

11 records
  • MS=28DB7DBFA2A8AAC4EA6DD3D82A523BFAB8D49EAD
  • google-site-verification=yiDfec79LcwxEABgm7bPHCi1Mhjg5-3iRshhf3tPysw
  • pardot855633=4f46596a456bfc1fb850aa00df6b0c241999904eb1a3de9c117a24db91df0320
  • TveOqSPK2IokCojfN/Kcj+jPOT66pHW/dun5QHKch8WHYLvCV7t/aS+Dbw8T3HcBcEXISgnE28uO1nmyyGtrag==
  • SPFv=spf1 mx ip4:97.107.175.74/32 ip4:97.107.175.73/32 ip4:148.77.10.216/32 include:mailgun.org include:aspmx.pardot.com include:49620510.spf08.hubspotemail.net include:spf.ess.barracudanetworks.com -all
  • MS=ms70739542
  • 1rjim7kdg9v995vr0fbnc2f2la
  • csr93bfehf9cj5etd49nkgt4qo
  • d7rsvf3fkq2s9q2tlgkh42jmuq
  • epdbv27cjiqirvkfm0h7tgd7di
  • pep5kfsvv281opvr5hgqvrfgrq
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