cix.csi.cuny.edu

Valid Email Server
Domain Lookup › cix.csi.cuny.edu

Domain Overview

DNS: ✓ 20d ago Checker: ✓ 20d ago
cix.csi.cuny.edu
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-21 12:22:25 UTC · ↺ Refresh

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MX Hostnames

  • mxa-0002b201.gslb.pphosted.com
  • mxb-0002b201.gslb.pphosted.com

MX Priorities

  • mxa-0002b201.gslb.pphosted.com: 0
  • mxb-0002b201.gslb.pphosted.com: 10

A / AAAA Records

  • 163.238.55.39 (no PTR)

Mail Server IPs

  • 66.159.240.152 ↩ mx0a-0002b201.pphosted.com
  • 66.159.238.125 ↩ mx0b-0002b201.pphosted.com

SOA Record

Raw SOA acme.ucc.cuny.edu hostmaster.acme.ucc.cuny.edu 6 10800 3600 2419200 3600
Primary NS (mname)
acme.ucc.cuny.edu
Admin Email (rname)
hostmaster@acme.ucc.cuny.edu
Serial
6
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

hudson.cis.cuny.edu
ns15.customer.level3.net
harlem.cis.cuny.edu
ns10.customer.level3.net
ext-ns1.columbia.edu
lavinia.cis.cuny.edu
acme.ucc.cuny.edu

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf-0002b201.pphosted.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict 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

✓ 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

1 record
  • SPFv=spf1 include:spf.protection.outlook.com include:spf-0002b201.pphosted.com -all
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