many as necessary with `addSubjectAlternativeName()`. This mechanism also supports a very limited
form of wildcards `*.example.com` where the `*` must be first and doesn't match nested subdomains.

By default certificates use fast and secure 256-bit ECDSA keys. For interoperability with very old
clients use `HeldCertificate.Builder.rsa2048()`.

Download
--------

```kotlin

        }
    }

    // Test with different from addresses
    public void test_differentFromAddresses() {
        String[] fromAddresses = { "******@****.***", "******@****.***", "******@****.***", "test.user@subdomain.example.com" };

        for (String from : fromAddresses) {
            ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
                private static final long serialVersionUID = 1L;