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nuhs.edu.sg

Email infrastructure report · Last checked

Summary

nuhs.edu.sg uses Self-hosted / Custom for email and has SPF, DKIM, and DMARC configured. It is a catch-all domain.

Mail provider

ProviderSelf-hosted / Custom self-hosted
Primary MXmail11.hmail.sg

MX records

PriorityHostnameIPs
10mail11.hmail.sg103.230.232.52
10mail21.hmail.sg103.230.234.196

Authentication

SPF✓ Present -all
DKIM✓ Found (selectors: default)
DMARC✓ Present p=quarantine
Raw SPF record
v=spf1 +a +mx +ip4:103.14.214.68 +ip4:103.230.232.100 +ip4:103.230.234.100 +ip4:103.230.235.18 +ip4:103.230.233.18 +ip4:52.74.245.222 +ip4:199.255.192.0/22 +ip4:199.127.232.0/22 +ip4:54.240.0.0/18 +ip4:69.169.224.0/20 +ip4:23.249.208.0/20 +ip4:23.251.224.0/19 +ip4:76.223.176.0/20 +ip4:54.240.64.0/19 +ip4:54.240.96.0/19 +ip4:52.82.172.0/22 +ip4:76.223.128.0/19 include:spf-0089c101.pphosted.com -all
Raw DMARC record
v=DMARC1;p=quarantine;rua=mailto:d.rua@nuhs.edu.sg; ruf=mailto:d.ruf@nuhs.edu.sg; fo=1

Email behavior

Catch-all✓ Yes
Disposable✗ No
Free provider✗ No
STARTTLS✓ Supported
SMTP response1556ms
SMTP banner220 mail11.hmail.sg ESMTP mail11.hmail.sg

What this means

This domain has strong email authentication. Messages claiming to come from @nuhs.edu.sg can be cryptographically verified by recipients, making spoofing difficult. Deliverability for legitimate mail should be good.

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curl https://api.checkmail.dev/v1/verify \
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  -H "Authorization: Bearer cm_live_..."