hostos.cuny.edu

Email infrastructure report · Last checked 28 Jul 2026, 21:08 UTC

Summary

hostos.cuny.edu uses Proofpoint for email and has SPF and DKIM configured. It is a catch-all domain.

Mail provider

ProviderProofpoint security-gateway

Primary MXmxa-00971101.gslb.pphosted.com

MX records

Priority	Hostname	IPs
10	mxa-00971101.gslb.pphosted.com	66.159.240.153
10	mxb-00971101.gslb.pphosted.com	66.159.240.153

Authentication

SPF✓ Present -all

DKIM✓ Found (selectors: selector1, selector2, s1, s2)

DMARC✗ Missing

Raw SPF record

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

Email behavior

Catch-all✓ Yes

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response481ms

SMTP banner220 mx0a-00971101.pphosted.com ESMTP mfa-m0421000

What this means

This domain is missing DMARC, which weakens its protection against email spoofing. Adding this record would improve deliverability and reduce the risk of impersonation.

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