duffco.com

Valid Email Server
Domain Lookup › duffco.com

Domain Overview

DNS: ✓ 4h ago Checker: ✓ 4h ago
duffco.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 09:01:49 UTC · ↺ Refresh

MX Hostnames

  • mx2-us1.ppe-hosted.com
  • mx1-us1.ppe-hosted.com

MX Priorities

  • mx1-us1.ppe-hosted.com: 10
  • mx2-us1.ppe-hosted.com: 20

A / AAAA Records

  • 209.17.116.163 (no PTR)

Mail Server IPs

  • 148.163.129.50 ↩ mx1-us1.ppe-hosted.com
  • 67.231.154.162 ↩ mx1-us1.ppe-hosted.com
  • 148.163.129.51 ↩ mx2-us1.ppe-hosted.com
  • 67.231.154.163 ↩ mx2-us1.ppe-hosted.com

SOA Record

Raw SOA ns77.worldnic.com namehost.worldnic.com 126021011 10800 3600 604800 3600
Primary NS (mname)
ns77.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126021011
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns78.worldnic.com
ns77.worldnic.com

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:23.24.18.108 include:_spf.smtp.com include:servers.mcsv.net a:dispatch-us.ppe-hosted.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No 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

7 records
  • ahtuoue9on0jo8eq56n1ff5bbn
  • SPFv=spf1 ip4:23.24.18.108 include:_spf.smtp.com include:servers.mcsv.net a:dispatch-us.ppe-hosted.com ~all
  • amn03p4db4v8utjo8bkqfb2t1i
  • ppe-5d6c04d7390e90d042f4
  • 129dg6bo40bg0jti3jp9nt69nt
  • 5fl0gn6t4nhdd26co2avt4mppm
  • 5YcC8YARtEjsKvDNAS/ySwNOGdt/seJ/ff/jYb9gnO6W26FiA80a+744svOQclKr1LpLuHdk6lKJk63VQMYabw==
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