csum.edu

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

Domain Overview

DNS: ⚡ live Checker: ⚡ live
csum.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-21 00:07:35 UTC · ↺ Refresh

MX Hostnames

  • csum-edu.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 89.106.200.1

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

cdc-infoblox03.csum.edu

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:172.58.35.60 ip4:198.189.53.88 ip4:207.178.233.92/30 ip4:173.55.241.128/28 ip4:74.217.151.34/32 ip4:23.103.224.0/19 ip4:206.191.224.0/19 ip4:40.103.0.0/16 include:spf1.csum.edu include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1;aspf=s;adkim=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

9 records
  • lvxEskbHhyOP9PJ9AkO9Dq9rbDvxTM6nIXcXWppnD84aiX7f2sbYF4urCjznyDflJSdyrNr22RuYBgALJE6+uQ==
  • MS=ms11133525
  • smcncpxxx5byyqjsmgfn6mm0cq32z0vy
  • adobe-idp-site-verification=4972d515e5e008cc8a91967e1c7e326e363a33182b27a004349452b1765bfae3
  • ZOOM_verify_2-QAIgDySF2-zASmaEUyBA
  • google-site-verification=ahOlRlHIvW4ZKNSiS4ggeMMhpIpujvZNkNi0rsmpphQ
  • apple-domain-verification=UCrAe4JciWGICu4j
  • openai-domain-verification=dv-tK8mCVziEVkHWm0nwR7nQqvL
  • SPFv=spf1 a mx ip4:172.58.35.60 ip4:198.189.53.88 ip4:207.178.233.92/30 ip4:173.55.241.128/28 ip4:74.217.151.34/32 ip4:23.103.224.0/19 ip4:206.191.224.0/19 ip4:40.103.0.0/16 include:spf1.csum.edu include:spf.protection.outlook.com -all
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