DNS Gurus
Open Cached · just now
81/100 SECURITY SCORE

Certificate Information

Subject
CN=autoconfig.dns1.doveserver.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
October 24, 2025
Valid Until
January 22, 2026 73 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
D1:B1:18:A5:98:77:9D:01:C3:60:E4:81:2E:65:C7:14:5C:72:34:6F:4F:2A:FE:F1:9C:98:CF:6C:20:82:1C:FB
Alternative Names
12 domains

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • • No CAA records configured - any CA can issue certificates
Recommendations
  • • Implement CAA records to restrict which CAs can issue certificates for your domain
  • • This adds an extra layer of security against unauthorized certificate issuance
  • • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • • Consider adding 'iodef' record to receive security incident reports