How do I fix SSL_ERROR_BAD_CERT_DOMAIN error for my email click tracking domain?

The SSL_ERROR_BAD_CERT_DOMAIN error for email click tracking domains stems from various causes related to SSL certificate configuration and domain setup. Common issues include a mismatch between the domain name on the certificate and the actual domain, often due to missing subdomains in the Subject Alternative Name (SAN) list, expired certificates, or the absence of SSL altogether on the click tracking domain. Problems with the certificate chain, CDN configurations, shared hosting limitations, DNS propagation delays, mixed content (HTTP resources on an HTTPS site), and incorrect entries in the hosts file can also trigger the error. Cloudflare's Flexible SSL setting may contribute, as it only encrypts traffic between the visitor and Cloudflare. Additionally, incorrect redirect configurations, and Server Name Indication (SNI) issues can be the cause. While the error doesn't directly impact email deliverability, it lowers click-through rates (CTR). To resolve the issue, it is best to ensure SSL is properly implemented, checking certificate details, verifying the CDN and server configuration, and that all resources are loaded over HTTPS. Contacting the ESP or hosting provider, or switching to a different hosting provider may be necessary.

The SSL_ERROR_BAD_CERT_DOMAIN error for email click tracking domains arises from various SSL certificate and domain configuration issues. Common causes include expired certificates, domain name mismatches in the certificate, missing subdomains in the Subject Alternative Name (SAN) list, and incorrect certificate chains. Problems with Content Delivery Networks (CDNs), shared hosting SSL limitations, DNS propagation delays after certificate installation, mixed content (HTTP resources on an HTTPS site), and incorrect entries in the hosts file can also trigger this error. Additionally, misconfigured redirects, and Server Name Indication (SNI) issues can contribute to the problem. Troubleshooting involves checking certificate details, ensuring proper CDN and server configuration, verifying DNS settings, and confirming that all resources are loaded over HTTPS. Consulting the ESP's support resources or getting a dedicated SSL certificate might also be required.

The SSL_ERROR_BAD_CERT_DOMAIN error for email click tracking domains often stems from the domain lacking SSL setup, leading browsers to attempt secure connections with mismatched default certificates. SSL configuration problems linked to hosting services that don't fully support SSL certificates for click-tracking domains are also a factor. While this error typically won't cause emails to be blocked by ISPs, it can significantly reduce click-through rates due to users encountering the security warning.

The SSL_ERROR_BAD_CERT_DOMAIN error arises from several SSL configuration issues. Key causes include a mismatch between the domain name on the certificate and the website's domain, often due to the certificate being for a different domain or lacking the specific subdomain in its Subject Alternative Name (SAN) list. Incomplete or incorrectly configured certificate chains, where intermediate certificates are missing, can also cause this error. Browser-specific caching can sometimes contribute. If using Cloudflare, Flexible SSL settings may be problematic, as encryption only occurs between the visitor and Cloudflare, not between Cloudflare and the origin server; Full or Strict SSL settings are recommended for end-to-end encryption.