Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sunlands.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 08:33:49 UTC · ↺ Refresh
MX Hostnames
- mxwcom.263xmail.com
- mxcom.263xmail.com
MX Priorities
- mxwcom.263xmail.com: 5
- mxcom.263xmail.com: 10
A / AAAA Records
- 42.62.10.155 (no PTR)
Mail Server IPs
- 38.83.106.84 ↩ us-mx1.263.net
- 38.83.106.85 ↩ us-mx2.263.net
- 143.110.227.31 (no PTR)
- 164.92.126.242 (no PTR)
SOA Record
Raw SOA
dns21.hichina.com hostmaster.hichina.com 2026011209 3600 1200 86400 600
Primary NS (mname)
dns21.hichina.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2026011209
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s
Nameservers (NS)
dns21.hichina.com
dns22.hichina.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.263xmail.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
2 records- MS=E9030DA8218627A02C9F92550516636CA180F6B0
- SPFv=spf1 include:spf.263xmail.com ~all
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