Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
51hitech.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-17 16:52:29 UTC · ↺ Refresh
MX Hostnames
- hzmx02.mxmail.netease.com
- hzmx01.mxmail.netease.com
- mx.263.net
- mxw.263.net
MX Priorities
- hzmx01.mxmail.netease.com: 10
- mx.263.net: 10
- hzmx02.mxmail.netease.com: 10
- mxw.263.net: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 47.90.150.166 (no PTR)
- 47.253.119.154 (no PTR)
- 38.83.106.84 ↩ us-mx1.263.net
- 143.110.227.31 (no PTR)
- 164.92.126.242 (no PTR)
- 38.83.106.85 ↩ us-mx2.263.net
SOA Record
Raw SOA
dns15.hichina.com hostmaster.hichina.com 2026011209 3600 1200 86400 600
Primary NS (mname)
dns15.hichina.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2026011209
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s
Nameservers (NS)
dns15.hichina.com
dns16.hichina.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.qiye.163.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; ruf=mailto:[email protected]; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:spf.qiye.163.com -all
- SPFv=spf1 include:spf.263.net -all
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