Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
yftech.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-19 04:43:27 UTC · ↺ Refresh
MX Hostnames
- mx1.feishu.cn
- mx3.feishu.cn
- mx2.feishu.cn
MX Priorities
- mx3.feishu.cn: 10
- mx1.feishu.cn: 1
- mx2.feishu.cn: 5
A / AAAA Records
- 139.129.28.28 (no PTR)
Mail Server IPs
- 122.14.229.0 (no PTR)
- 52.220.106.220 ↩ ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com
- 101.126.58.225 (no PTR)
SOA Record
Raw SOA
ns3.dnsv2.com level3dnsadmin.dnspod.com 1779160367 3600 180 1209600 180
Primary NS (mname)
ns3.dnsv2.com
Admin Email (rname)
level3dnsadmin@dnspod.com
Serial
1779160367
Refresh
3600s
Retry
180s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns4.dnsv2.com
ns3.dnsv2.com
SPF Record
✓ Soft Fail (~all)
v=spf1 +include:_netblocks.m.feishu.cn ~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
6 records- 5fe6j7fshs1c3t3ea4l6uiomk6
- spf1 +include:_netblocks.m.feishu.cn ~all
- SPFv=spf1 +include:_netblocks.m.feishu.cn ~all
- verification-code-site-App_feishu=MpPn07KjirCEjOxpmT79
- google-site-verification=yiM4kDXx9n3vctv5ujNQm7lHj5py0SzjKkFkXfI-nHo
- ms81325285
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