Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jeffco.us
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 13:09:38 UTC · ↺ Refresh
MX Hostnames
- mxa-0010c902.gslb.pphosted.com
- mxb-0010c902.gslb.pphosted.com
MX Priorities
- mxa-0010c902.gslb.pphosted.com: 10
- mxb-0010c902.gslb.pphosted.com: 10
A / AAAA Records
- 159.60.135.5 (no PTR)
Mail Server IPs
- 205.220.178.142 ↩ mx0b-0010c902.pphosted.com
SOA Record
Raw SOA
ns1.f5clouddns.com f5xc-dns.f5.com 2025042418 3600 3600 2419200 86400
Primary NS (mname)
ns1.f5clouddns.com
Admin Email (rname)
f5xc-dns@f5.com
Serial
2025042418
Refresh
3600s
Retry
3600s
Expire
2419200s
Minimum TTL
86400s
Nameservers (NS)
ns2.f5clouddns.com
ns1.f5clouddns.com
dns1.jeffco.us
dns2.jeffco.us
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:205.201.133.57 ip4:52.24.85.245 ip4:34.216.119.1 ip4:166.78.71.191/32 ip4:54.235.108.91 a:mail.womzai.com include:spf.qscend.com include:_spf.mlsend.com include:spf-0010c902.pphosted.com include:_spf.salesforce.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; pct=100; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; aspf=s; adkim=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- xbWyPvXitPBYdA8X0s1s7a46bPnubZyJQ2q8at8rX+0=
- apple-domain-verification=IP5IUojd4lBCrD6e
- onetrust-domain-verification=fbbc18ef67bf418aa2308ae1c7aa6b7f
- M7dtlinZ0nFvoAAsO/rtp1j5F1ny3k/wHe80TQv0+f2kuTyleuBXbkkhbtG61rpxJezCp0RitCo4YI9gDNGvYQ==
- MS=ms10079852
- facebook-domain-verification=0nq50wifi2k69rrdckrr7kvbcmh8uf
- SPFv=spf1 mx ip4:205.201.133.57 ip4:52.24.85.245 ip4:34.216.119.1 ip4:166.78.71.191/32 ip4:54.235.108.91 a:mail.womzai.com include:spf.qscend.com include:_spf.mlsend.com include:spf-0010c902.pphosted.com include:_spf.salesforce.com -all
- google-site-verification=s7bA3r8y99EfV-b0PqDogC943YlA26M_L3YRVd58GHw
Full email verification for jeffco.us
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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