duanduan.com

Valid Email Server
Domain Lookup › duanduan.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
duanduan.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-14 03:28:46 UTC · ↺ Refresh

MX Hostnames

  • mx01.263xmail.com
  • mxw.263xmail.com

MX Priorities

  • mx01.263xmail.com: 5
  • mxw.263xmail.com: 10

A / AAAA Records

  • 47.101.199.126 (no PTR)

Mail Server IPs

  • 164.92.126.242 (no PTR)
  • 143.110.227.31 (no PTR)
  • 38.83.106.84 ↩ us-mx1.263.net
  • 38.83.106.85 ↩ us-mx2.263.net

SOA Record

Raw SOA ns11.xincache.com ns12.xincache.com 1764763487 3600 180 1209600 180
Primary NS (mname)
ns11.xincache.com
Admin Email (rname)
ns12@xincache.com
Serial
1764763487
Refresh
3600s
Retry
180s
Expire
1209600s
Minimum TTL
180s

Nameservers (NS)

ns13.xincache.com
ns14.xincache.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.263.net -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; fo=1; ruf=mailto:[email protected]; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 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

3 records
  • DMARCv=DMARC1;p=none;rua=mailto:[email protected];ruf=mailto:[email protected]
  • DKIMv=DKIM1\;k=rsa\;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCxBZCr1CUf7NJnSUlzK1nTJ9ol/qmAzBjlDG2etn5A+gDp+Jd3hTXPNRVmUcbc8JtsIaQMezzwY1/7oFO3dN3DBUzxdDrxc+1tcABFMZ2eLMH/r7/Zuwfd3JjzVJc8RPRBAucIayujk34RehUjyVxzFs0kk567OZRl1/zUWuLwvwIDAQAB
  • SPFv=spf1 include:spf.263.net -all
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