Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
usps.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 22:19:55 UTC · ↺ Refresh
MX Hostnames
- mxa-0038fd02.gslb.gpphosted.com
- mxb-0038fd02.gslb.gpphosted.com
MX Priorities
- mxa-0038fd02.gslb.gpphosted.com: 10
- mxb-0038fd02.gslb.gpphosted.com: 10
A / AAAA Records
- 56.0.134.100 ↩ emergingtech.usps.com
Mail Server IPs
- 66.159.228.37 ↩ mx0f-0038fd02.gpphosted.com
- 66.159.227.37 ↩ mx0e-0038fd02.gpphosted.com
SOA Record
Raw SOA
dns141.usps.com domainadmin.imail.usps.gov 711473858 3600 1800 1209600 1800
Primary NS (mname)
dns141.usps.com
Admin Email (rname)
domainadmin@imail.usps.gov
Serial
711473858
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
1800s
Nameservers (NS)
dns082.usps.com
dns141.usps.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:56.0.0.0/16 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- 5gnbvs23tq9vmq20zmtgsydzs39qpksb
- MS=891EBC03C14DB5081F9801A66F922A606978EBD3
- MS=ms75843013
- wbbcfpqr2lfkgls6hh8gtxrn3y16p7yx
- xh9xzqypj83py3z3049hr39d5m75sffn
- SPFv=spf1 ip4:56.0.0.0/16 -all
- t5cmxmtc9bsyn3lnh9cp61w7zl6p9dmh
- apple-domain-verification=1mTpTvcYUbpLD2DCGn6S7e8E7GNEuCbLmsnOVoINlXk
- m8gzt1kxn0b8hm22m2154p7dgkwrqllc
- U0S4P86940
- google-site-verification=g8v2m4CGzjzeR7BlXEWdkPw_Vee3KLd5Msu1oxq9X4Y
Full email verification for usps.com
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