Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
pobox.upenn.edu
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 23:36:00 UTC · ↺ Refresh
MX Hostnames
- mxb-00390e01.gslb.pphosted.com
- mxa-00390e01.gslb.pphosted.com
MX Priorities
- mxb-00390e01.gslb.pphosted.com: 10
- mxa-00390e01.gslb.pphosted.com: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 148.163.137.158 ↩ mx0b-00390e01.pphosted.com
- 148.163.133.158 ↩ mx0a-00390e01.pphosted.com
SOA Record
No SOA record found.
Nameservers (NS)
No nameservers found.
SPF Record
✓ Soft Fail (~all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ip4:72.55.140.81 include:spf.protection.outlook.com include:spf.penno365.isc.upenn.edu ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
1 record- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ip4:72.55.140.81 include:spf.protection.outlook.com include:spf.penno365.isc.upenn.edu ~all
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