ieor.columbia.edu

Valid Email Server
Domain Lookup › ieor.columbia.edu
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
ieor.columbia.edu
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-27 03:14:01 UTC · ↺ Refresh

MX Hostnames

  • mxa-00364e01.gslb.pphosted.com
  • mxb-00364e01.gslb.pphosted.com

MX Priorities

  • mxb-00364e01.gslb.pphosted.com: 10
  • mxa-00364e01.gslb.pphosted.com: 10

A / AAAA Records

  • 162.159.128.65 (no PTR)
  • 162.159.128.64 (no PTR)

Mail Server IPs

  • 148.163.135.74 ↩ mx0a-00364e01.pphosted.com

SOA Record

No SOA record found.

Nameservers (NS)

No nameservers found.

SPF Record

✓ Soft Fail (~all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
⚠ 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:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
  • google-site-verification=6-FtBviCH3704W3--TYP5Rv3SRzg50Xb1LG6naeD5iU
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