gc.cuny.edu

Valid Email Server
Domain Lookup › gc.cuny.edu

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
gc.cuny.edu
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-23 02:00:20 UTC · ↺ Refresh

MX Hostnames

  • mxb-00028601.gslb.pphosted.com
  • mxa-00028601.gslb.pphosted.com

MX Priorities

  • mxb-00028601.gslb.pphosted.com: 10
  • mxa-00028601.gslb.pphosted.com: 10

A / AAAA Records

  • 104.16.203.106 (no PTR)
  • 104.16.202.106 (no PTR)

Mail Server IPs

  • 66.159.238.117 ↩ mx0b-00028601.pphosted.com

SOA Record

Raw SOA pennstation.gc.cuny.edu systems.gc.cuny.edu 2026020247 10800 3600 1209600 600
Primary NS (mname)
pennstation.gc.cuny.edu
Admin Email (rname)
systems@gc.cuny.edu
Serial
2026020247
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
600s

Nameservers (NS)

lavinia.cis.cuny.edu
pennstation.gc.cuny.edu
acme.ucc.cuny.edu
ext-ns1.columbia.edu
pennstation2.gc.cuny.edu

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:146.96.128.87 ip4:146.96.128.88 ip4:165.193.85.0/24 ip4:208.75.123.0/24 ip4:205.207.106.0/24 ip4:23.253.179.56/29 ip4:206.107.42.249 ip4:206.107.42.254 ip4:205.139.104.0/22 ip4:216.235.195.0/24 include:spf-00028601.pphosted.com include:servers.mcsv.net include:aspmx.pardot.com include:spf.constantcontact.com include:spf.protection.outlook.com include:spf.cuny.edu include:_spf.mlsend.com ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 3 found
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1

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

All TXT Records

9 records
  • cloudflare-verify.gc.cuny.edu=689595328-762695854
  • google-site-verification=6Shr3F79sWDKA7oemZSJmwsfp-yqlSsP6JSvew2kfec
  • google-site-verification=H5fcOk_pAo-uzhEHWy2Wb8BoUKB3jCuT61UC4l8GeuM
  • mailerlite-domain-verification=b0e5b5651877be3de8df81c5cfcf31d531778ea3
  • SPFv=spf1 ip4:146.96.128.87 ip4:146.96.128.88 ip4:165.193.85.0/24 ip4:208.75.123.0/24 ip4:205.207.106.0/24 ip4:23.253.179.56/29 ip4:206.107.42.249 ip4:206.107.42.254 ip4:205.139.104.0/22 ip4:216.235.195.0/24 include:spf-00028601.pphosted.com include:servers.mcsv.net include:aspmx.pardot.com include:spf.constantcontact.com include:spf.protection.outlook.com include:spf.cuny.edu include:_spf.mlsend.com ~all
  • adobe-idp-site-verification=85f26deabee4501cf64938781c74b27b6abbe5c4d11362beeada54e013704f91
  • apple-domain-verification=7p2zYPWKC7OaLcqh
  • google-site-verification=5d-cXlXmXj7QUpM5-KwdDfQLn4I7lIv_8iVrEj1f-54
  • MS=F20EBEF5D30A1D8FA67056E23A983CD9C3932FD6
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