mail.rhdgroup.com.twSSL Check Results
38
days until expiration
TLSv1.2
ECDHE-RSA-AES256-GCM-SHA384
Sectigo Limited
2048 bits
380746149EFE3172DF99F3B375D26D76
FD:E8:8B:C7:D3:7E:CC:2D:1B:ED:25:EB:1A:87:57:02:9A:5E:8F:EE
A4:A7:32:69:9C:9F:8F:35:E6:14:28:C6:86:B1:F1:6E:92:E9:29:A6:E0:BC:B4:DC:99:20:C7:F8:9C:CA:08:4F
Security Score
Excellent security configuration
Sectigo Public Server Authentication CA DV R36
38 days
Jul 15, 2025
Aug 15, 2026
Security Analysis
Secure
Secure
Want continuous monitoring?
Get instant alerts when certificates expire or encounter issues.
Certificate History
No historical data found
SSL Security Best Practices
Automate Renewals
Forgotten certificates cause downtime. Use Let's Encrypt or professional monitoring to automate the renewal process.
Use Strong Protocols
Always prefer TLS 1.3 or 1.2. Disable older, vulnerable protocols like SSL 3.0, TLS 1.0, and TLS 1.1 on your server.
Monitor Transparency
Keep an eye on Certificate Transparency (CT) logs to ensure no unauthorized certificates are issued for your domain.
Frequently Asked Questions
Everything you need to know about mail.rhdgroup.com.tw's security status.
Q:When does mail.rhdgroup.com.tw's SSL certificate expire?
mail.rhdgroup.com.tw's certificate expires on August 15, 2026, which is in 38 days.
Q:Who issued the certificate for mail.rhdgroup.com.tw?
It was issued by Sectigo Limited. This issuer is recognized by all major browsers.
Q:Is the connection to mail.rhdgroup.com.tw safe?
Yes, the certificate is valid, meaning communication with mail.rhdgroup.com.tw is encrypted and secure.
Q:Can I monitor this domain for free?
Yes! You can register at GuardSSL to get automatic alerts before mail.rhdgroup.com.tw's certificate expires, preventing any downtime.