hostos.cuny.edu

Valid Email Server
Domain Lookup › hostos.cuny.edu

Domain Overview

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

Checked via [email protected] · 2026-04-04 23:42:43 UTC · ↺ Refresh

MX Hostnames

  • mxb-00971101.gslb.pphosted.com
  • mxa-00971101.gslb.pphosted.com

MX Priorities

  • mxb-00971101.gslb.pphosted.com: 10
  • mxa-00971101.gslb.pphosted.com: 10

A / AAAA Records

  • 146.111.169.97 ↩ hostos.cuny.edu

Mail Server IPs

  • 66.159.238.126 ↩ mx0b-00971101.pphosted.com
  • 66.159.240.153 ↩ mx0a-00971101.pphosted.com

SOA Record

Raw SOA acme.ucc.cuny.edu hostmaster.acme.ucc.cuny.edu 2024101830 10800 3600 2419200 3600
Primary NS (mname)
acme.ucc.cuny.edu
Admin Email (rname)
hostmaster@acme.ucc.cuny.edu
Serial
2024101830
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

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

SPF Record

✓ Strict (-all)
v=spf1 ip4:146.111.177.57 ip4:146.111.177.58 ip4:146.111.177.180 ip4:146.111.177.181 ip4:146.111.177.182 ip4:146.111.177.184 ip4:146.111.177.185 ip4:146.111.176.70 ip4:66.159.240.153 ip4:66.159.238.126 include:mh.blackboard.com include:hobsonsmail.com include:askadmissionsmail.com include:spf.constantcontact.com include:_spf.academicworks.com include:spf.cuny.edu include:spf.protection.outlook.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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

13 records
  • MS=047CA3528E71663A6ABFCDD46C49464AF76ECAA9
  • hoc67b4feih3sjg5kiunbrne7m
  • sk4vvc76t5p5qocieg22b2lu7i
  • sbPZRCY8CMyUUQ55YzIIVhTvDQ8oNDn5MdvHqc+z2BD1mGxe6O2woXr2irU59miCqb6xTBx3Bj3N949Zp1hQuA==
  • 27.06.2024
  • 5auei6jrludsg6gvrjag76lp06
  • ruekmle296b8emrdjrk0ok0o9h
  • SPFv=spf1 ip4:146.111.177.57 ip4:146.111.177.58 ip4:146.111.177.180 ip4:146.111.177.181 ip4:146.111.177.182 ip4:146.111.177.184 ip4:146.111.177.185 ip4:146.111.176.70 ip4:66.159.240.153 ip4:66.159.238.126 include:mh.blackboard.com include:hobsonsmail.com include:askadmissionsmail.com include:spf.constantcontact.com include:_spf.academicworks.com include:spf.cuny.edu include:spf.protection.outlook.com -all
  • ebacpv7jrfvc0mkn6bj73jus1u
  • 4e9jm01sv33h9mebn33cjkdhsk
  • MS=ms74574622
  • 9fgaomh071tpfg93uhr9t9h5in
  • cisco-ci-domain-verification=4a73f5a81be38cc087e16668cc83cc20bfc0e0a6ce305985c01011e3e243e9b7
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