Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hsph.harvard.edu
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 10:24:32 UTC · ↺ Refresh
MX Hostnames
- mx0b-00171101.pphosted.com
- mx0a-00171101.pphosted.com
MX Priorities
- mx0a-00171101.pphosted.com: 100
- mx0b-00171101.pphosted.com: 100
A / AAAA Records
- 23.185.0.4 (no PTR)
- 2620:12a:8001::4 (no PTR)
- 2620:12a:8000::4 (no PTR)
Mail Server IPs
- 67.231.148.27 ↩ mx0a-00171101.pphosted.com
- 67.231.156.27 ↩ mx0b-00171101.pphosted.com
SOA Record
Raw SOA
a1-171.akam.net netmanager.harvard.edu 2023062285 10800 3600 2419200 3600
Primary NS (mname)
a1-171.akam.net
Admin Email (rname)
netmanager@harvard.edu
Serial
2023062285
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
a7-65.akam.net
a10-66.akam.net
a1-171.akam.net
a6-66.akam.net
a11-67.akam.net
a16-64.akam.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._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
21 records- ms=ms74367483
- google-site-verification=ydM7MYcmpL6_RIQCzeuolKd51ZRgAEJeAN-e-9krbYY
- smartsheet-site-validation=rxHSZ_2IUgkUCta4SSJkRjscUejw-1sN
- openai-domain-verification=dv-vajGuT7ajx8rYSylap2Fx9AK
- 8HO4IOae30aj4BC+OleviYY+HRNFYxlkHlRogmERQ3thvgVbf8+YQnMLVFtr1vXkgw5hL5a/t0pVYOvWZbMtIg==
- atlassian-domain-verification=drv9Ojfq2f-mMuNwbFYurpBp217l6LfP4q5azB8ALkpZIB67Kj/UhiTh8+vTzGTd
- knowbe4-site-verification=add85bd4aec0e689912e87648cd571bf
- e2ma-verification=srbfb
- google-site-verification=R4I4W9fjLqNsFbXK2URXibsGLKlUmcTrdTSsScgBEZ8
- google-site-verification=LYPEQKh976HuzrtCpdh4H99sAyEPUCSEUnvaxM_cXUA
- _globalsign-domain-verification=37Nex_d9C-BUoDbwGqU1c9iVSkUq8DFO31XFTWfsIt
- atlassian-domain-verification=ASRKBXyOafZgDCRWh1Ylv34hiOSMgAIoNXs8H57rR3aTkuOD5KwJfUN9G3f7Ah/H
- facebook-domain-verification=5lwhmcevf2vwbse7aekfk7t4l4ghiy
- google-site-verification=RfvhgEiOubHezSFPrzeT-3CgimBOcdCqmROO_tBpmls
- JZQYStIKRIlEDc2pKjLqeZecAmajNxusDKmcWlzMKILeza3a6ywg6vCZ0yv+PIGprQFg1uBGrY4YFEudaFTLjQ==
- e2ma-verification=bvbfb
- google-gws-recovery-domain-verification=65703858
- SPFv=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
- google-site-verification=tdjVOYOgy8lohKNxA7gVQZHRvgCX43vRmp7sWF0TA_w
- atlassian-domain-verification=bwIB3L0LkGfUP1/Je50C5H22fC3d8LVL913Og31xM2zEV13DXwSbCPcRWNCzqeWy
- globalsign-domain-verification=ba632767ee695a7ed3b4b5d402d75c5b
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for hsph.harvard.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits