Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
harvardbusiness.org
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 21:11:16 UTC · ↺ Refresh
MX Hostnames
- mxb-00044a01.gslb.pphosted.com
- mxa-00044a01.gslb.pphosted.com
MX Priorities
- mxb-00044a01.gslb.pphosted.com: 10
- mxa-00044a01.gslb.pphosted.com: 10
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 67.231.156.201 ↩ mx0b-00044a01.pphosted.com
SOA Record
Raw SOA
ns-649.awsdns-17.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-649.awsdns-17.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-359.awsdns-44.com
ns-649.awsdns-17.net
ns-1239.awsdns-26.org
ns-1692.awsdns-19.co.uk
SPF Record
✓ Strict (-all)
v=spf1 ip4:52.20.29.3 ip4:12.129.29.143 ip4:69.26.102.95 include:spf.protection.outlook.com include:spf.mandrillapp.com include:_spf.qualtrics.com include:mail.zendesk.com include:a._spf.brightspace.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict 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
✓ 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
16 records- webexdomainverification.4C675B8B1892B136E053AB06FC0A3F65=890463c4-60bc-432e-8301-d3fd93cb8219
- MS=ms86714950
- jpenL+jW3uMbNKkbKtHy/gzaewJo7B+LoAZCIYwORsCws8yo4MwY7TEfQdE2rbYJCIN/gMBCh77iyIKU4U6E1g==
- sip=m699vbpan7kdoitobogsq38e1k
- docusign=8f8855df-bff3-4b63-b925-6762fbb37a4c
- cloudhealth=79c737a9-91c7-4312-968a-9910c9fd4628
- SPFv=spf1 ip4:52.20.29.3 ip4:12.129.29.143 ip4:69.26.102.95 include:spf.protection.outlook.com include:spf.mandrillapp.com include:_spf.qualtrics.com include:mail.zendesk.com include:a._spf.brightspace.com -all
- extensis-domain-verification=3decd987-0352-469b-8111-a273b429588a
- smartsheet-site-validation=RVGV4Uuo63-S4jDRKoPO_tasJauUzNRY
- openai-domain-verification=dv-aeO2oPprlwbCTqdC4M2YlJh0
- atlassian-domain-verification=5VnB9cXf8cZ+rqMksjlq1KyEzUSjGsBJ5irmtvOZtpwtq6AsKSs+jGHcKUhotODA
- ciscocidomainverification=af35c5a7f2884831dca58cc4219b3fb63d9e0419efc9a3c1ed82a55ee07e13c
- apple-domain-verification=JwufrwtfTqSQmAm4
- lyncdiscover=seh3q1rpvadu98fpk213q7htq2
- google-site-verification=-VWlW3DLO8-WqpBW0vjVeT4_DP4qffnsZ4k9Al6QBtc
- onetrust-domain-verification=9bb5a84065eb4ff99b70b22564531982
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