If your email signing certificate expires, the digital signature associated with the certificate will no longer be considered valid. As a result, recipients will not be able to verify the authenticity or integrity of your emails using that expired certificate. It is crucial to renew your email signing certificate before it expires to ensure uninterrupted email security and trust.
If your email signing certificate is compromised, meaning someone gains unauthorized access to your private key or the certificate itself, immediate action is necessary. You should revoke the compromised certificate and request a new one. Revocation notifies recipients and email clients to no longer trust the compromised certificate. This ensures that any attempts to use the compromised certificate for fraudulent activities will be ineffective. Contact your email signing certificate provider, such as host.co.in, for guidance on revoking the compromised certificate and obtaining a new one to maintain the security and integrity of your email communications.