Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
chbio.com.tw
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 18:29:34 UTC · ↺ Refresh
MX Hostnames
- chbio-com-tw.a-v1.mx.microsoft
MX Priorities
- chbio-com-tw.a-v1.mx.microsoft: 10
A / AAAA Records
- 172.66.148.136 (no PTR)
- 104.20.47.72 (no PTR)
- 2606:4700:10::6814:2f48 (no PTR)
- 2606:4700:10::ac42:9488 (no PTR)
Mail Server IPs
- 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
- 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
- 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.chbio.com.tw dns.cloudflare.com 2399522217 10000 2400 604800 1800
Primary NS (mname)
ns1.chbio.com.tw
Admin Email (rname)
dns@cloudflare.com
Serial
2399522217
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns2.chbio.com.tw
ns1.chbio.com.tw
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; pct=100; aspf=r; adkim=s; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; fo=1:d:s
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- samsung-domain-verification=33955579-0e3d-48d9-aad3-570ab7895615
- SPFv=spf1 include:spf.protection.outlook.com ~all
- atlassian-domain-verification=rZYvBDEEGUHnafjX2X7ozIUKgn9f9/fsv92mfmKGuVW2wGGfrhRuJqTlkiUZY7pr
- google-site-verification=0mnMoaFSnNhEwnCmjWdITQ9hCki9pGJchnIgRnLsjTw
Full email verification for chbio.com.tw
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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