Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hbsp.harvard.edu
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 10:24:30 UTC · ↺ Refresh
MX Hostnames
- mxb-00044a01.gslb.pphosted.com
- mxa-00044a01.gslb.pphosted.com
MX Priorities
- mxa-00044a01.gslb.pphosted.com: 10
- mxb-00044a01.gslb.pphosted.com: 10
A / AAAA Records
- 99.84.160.127 ↩ server-99-84-160-127.jfk50.r.cloudfront.net
- 99.84.160.39 ↩ server-99-84-160-39.jfk50.r.cloudfront.net
- 99.84.160.115 ↩ server-99-84-160-115.jfk50.r.cloudfront.net
- 99.84.160.21 ↩ server-99-84-160-21.jfk50.r.cloudfront.net
Mail Server IPs
- 67.231.156.201 ↩ mx0b-00044a01.pphosted.com
- 67.231.148.202 ↩ mx0a-00044a01.pphosted.com
SOA Record
Raw SOA
ns-620.awsdns-13.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-620.awsdns-13.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1948.awsdns-51.co.uk
ns-201.awsdns-25.com
ns-620.awsdns-13.net
ns-1356.awsdns-41.org
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:74.125.148.0/22 ip4:52.20.29.3 include:spf.protection.outlook.com include:mail.zendesk.com include:mktomail.com ~all
📊 DNS lookups: 3/10
~ 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
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
17 records- openai-domain-verification=dv-J2CslYoSkPOzK8E9v28obPeR
- MS=ms20977590
- ciscocidomainverification=75b307d4f78eb3ac14919fc1bf12257c686ab87161ff290160875b778581546
- Iqejb5kvxVrzGk81/iZO54H3WuBWyTo/uD7B6TAkl1pr33mcOmK0O2xb1x5b9T2Nl22BssU/UsCRaabNb8hWlQ==
- SPFv=spf1 ip4:74.125.148.0/22 ip4:52.20.29.3 include:spf.protection.outlook.com include:mail.zendesk.com include:mktomail.com ~all
- webexdomainverification.4C675B8B1892B136E053AB06FC0A3F65=0d523378-22ea-4f16-8e01-2b7b333134aa
- ulbvk2dgm0qa1l42psr19bhvmc
- onetrust-domain-verification=656a103f7da1496283549d12c9656fdb
- m699vbpan7kdoitobogsq38e1k
- smartsheet-site-validation=USA87y0CzxuTSUCWZ-QzRd6cTIPKz2ZN
- google-site-verification=RCCOo7F8ag5Oc8-GNjiM18K2BMxz2r_NGWOZbTxkBmQ
- seh3q1rpvadu98fpk213q7htq2
- atlassian-domain-verification=5VnB9cXf8cZ+rqMksjlq1KyEzUSjGsBJ5irmtvOZtpwtq6AsKSs+jGHcKUhotODA
- mhhfqp2etccbqmbu7pkoq08u0n
- extensis-domain-verification=3decd987-0352-469b-8111-a273b429588a
- knowbe4-site-verification=f00a4d6e618b4a00b6f39e0b4c9e093f
- docusign=a1f0c81a-468c-411b-9870-e7fb0da5c82f
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