Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sxau.edu.cn
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 08:43:51 UTC · ↺ Refresh
MX Hostnames
- mxbiz2.qq.com
- mxbiz1.qq.com
MX Priorities
- mxbiz2.qq.com: 10
- mxbiz1.qq.com: 5
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 43.154.252.16 (no PTR)
- 43.154.252.202 (no PTR)
- 103.86.78.2 (no PTR)
- 103.86.78.3 (no PTR)
SOA Record
Raw SOA
ns.sxau.edu.cn admin.example.com 2100001411 10800 900 604800 86400
Primary NS (mname)
ns.sxau.edu.cn
Admin Email (rname)
admin@example.com
Serial
2100001411
Refresh
10800s
Retry
900s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
dns2.sxau.edu.cn
dns1.sxau.edu.cn
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.mail.qq.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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
1 record- SPFv=spf1 include:spf.mail.qq.com ~all
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