Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
yintao.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 09:33:49 UTC · ↺ Refresh
MX Hostnames
- mx.yintao.com
MX Priorities
- mx.yintao.com: 10
A / AAAA Records
- 37.247.55.132 ↩ pm19.topsynthesys.com
Mail Server IPs
- 37.247.55.132 ↩ pm19.topsynthesys.com
SOA Record
Raw SOA
pm19.topsynthesys.com postmaster.topsynthesys.com 1774511708 7200 3600 1209600 2560
Primary NS (mname)
pm19.topsynthesys.com
Admin Email (rname)
postmaster@topsynthesys.com
Serial
1774511708
Refresh
7200s
Retry
3600s
Expire
1209600s
Minimum TTL
2560s
Nameservers (NS)
pm20.topsynthesys.com
pm19.topsynthesys.com
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:37.247.55.132 ip4:37.247.48.89 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=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]
↳ Subdomain policy: quarantine
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
1 record- SPFv=spf1 mx ip4:37.247.55.132 ip4:37.247.48.89 -all
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