Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hbr.org
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 12:10:22 UTC · ↺ Refresh
MX Hostnames
- mxa-00044a01.gslb.pphosted.com
- mxb-00044a01.gslb.pphosted.com
MX Priorities
- mxa-00044a01.gslb.pphosted.com: 10
- mxb-00044a01.gslb.pphosted.com: 10
A / AAAA Records
- 18.238.55.46 ↩ server-18-238-55-46.jfk52.r.cloudfront.net
- 18.238.55.19 ↩ server-18-238-55-19.jfk52.r.cloudfront.net
- 18.238.55.117 ↩ server-18-238-55-117.jfk52.r.cloudfront.net
- 18.238.55.63 ↩ server-18-238-55-63.jfk52.r.cloudfront.net
Mail Server IPs
- 67.231.148.202 ↩ mx0a-00044a01.pphosted.com
SOA Record
Raw SOA
ns-1175.awsdns-18.org hostmaster.harvardbusiness.org 1 7200 900 1209600 86400
Primary NS (mname)
ns-1175.awsdns-18.org
Admin Email (rname)
hostmaster@harvardbusiness.org
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-469.awsdns-58.com
ns-604.awsdns-11.net
ns-1175.awsdns-18.org
ns-1877.awsdns-42.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:167.89.5.215 include:hbsp.harvard.edu include:amazonses.com include:u12602457.wl208.sendgrid.net include:aspmx.sailthru.com include:_spf.bigcommerce.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
20 records- google-site-verification=o-E502ZnlfSSAM2JRb0RUfIxROmYDcYVOZnzlVRknS0
- Wo71J1PNbWKkAikjb4WeqxCjBcNQwf6hcll0LJM6s9peRMF1ImcaCENQfddffLROaJY6wZHW2jrUsDNXC38vjg==
- _1nl5kysnqxswpmo75e1u1fdcbs0fptr
- google-site-verification=0fyEgLpijqbt_OMG0ncBIK4G153eKqHF7UeGfTZgZk0
- onetrust-domain-verification=0df7d79642a64b338bb91818045b158d
- webexdomainverification.4C675B8B1892B136E053AB06FC0A3F65=7b2ac320-8920-4cf1-826d-975f96f199cb
- MS=ms51679339
- extensis-domain-verification=3decd987-0352-469b-8111-a273b429588a
- ciscocidomainverification=3a5e2e428cc891b6aef0b7598537338dd5c2bf8fe96326d58d87f62324dd9733
- SPFv=spf1 ip4:167.89.5.215 include:hbsp.harvard.edu include:amazonses.com include:u12602457.wl208.sendgrid.net include:aspmx.sailthru.com include:_spf.bigcommerce.com ~all
- knowbe4-site-verification=f00a4d6e618b4a00b6f39e0b4c9e093f
- docusign=59df337d-04fe-422f-bd8e-438fc3e80d21
- openai-domain-verification=dv-yzIW4FvevpXrgKYrQ9Ndlm4V
- lyncdiscover = seh3q1rpvadu98fpk213q7htq2
- google-site-verification=P1JGD_hnkAqlxSPmsFW_M2nifpmJC2iBjnfmKi1uJCc
- atlassian-domain-verification=5VnB9cXf8cZ+rqMksjlq1KyEzUSjGsBJ5irmtvOZtpwtq6AsKSs+jGHcKUhotODA
- facebook-domain-verification=hvrm85rd5hvr18o50vzpd1lprkjg76
- google-site-verification=ikLo_eYH7jY56yB4qtVoDTxY9WUWl7NkUEsM-UB6DT0
- sip=m699vbpan7kdoitobogsq38e1k
- smartsheet-site-validation=76f6Fdn8EnnOgbwX-KcCnJ5Nj66wRUeo
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