SSL Verification Bypassed
The server's SSL certificate could not be verified. The analysis was completed using insecure mode. Data may be less reliable.
Reason:
Hostname Mismatch - certificate is issued for *.caldav.fastmail.com, *.carddav.fastmail.com, *.fastmail.com, fastmail.com, not for mail.findallmydata.com
Open
Cached
·
just now
95/100
SECURITY SCORE
Certificate Information
Subject
CN=*.fastmail.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
December 02, 2025
Valid Until
March 02, 2026
66 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
1B:54:51:FF:C9:B8:CA:15:F6:7D:EE:51:30:77:40:6F:10:0A:3E:3A:3B:2C:AB:78:6A:B0:85:5C:20:13:2F:C8
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
HTTP Security Headers
Status
Strict-Transport-Security
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Good
default-src; connect-src; img-src; +11 more
default-src 'none'; connect-src 'self' blob: https://lookup.binlist.net https://api.pinpayments.com https://o73885.ingest.sentry.io/api/ https://fastmail.innocraft.cloud https://hcaptcha.com https://*.hcaptcha.com https://*.fastmail.com https://*.fastmailusercontent.com; img-src 'self' data: blob: https://user.fm https://*.fastmailcdn.com https://*.fastmailusercontent.com; font-src 'self'; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://*.hcaptcha.com; script-src 'self' https://hcaptcha.com https://*.hcaptcha.com 'sha256-3zLaO2X2qEZTc3RBUl/mxyLiXfTsoJcBP4MnIX0mKuU='; child-src 'self'; worker-src 'self'; manifest-src 'self'; media-src blob: https://*.fastmailusercontent.com; object-src blob: https://*.fastmailusercontent.com; frame-src blob: https://hcaptcha.com https://*.hcaptcha.com https://*.fastmail.com https://*.fastmailusercontent.com; form-action 'self'; frame-ancestors 'self';
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
never,no-referrer,same-origin
Permissions-Policy
Present
accelerometer=(), ambient-light-sensor=(), camera=(), document-domain=(), encrypted-media=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), navigation-override=(), sync-xhr=(), usb=(), xr-spatial-tracking=()
Recommendations
- • Strengthen CSP by removing 'unsafe-eval'
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