page <a href="../man7/ossl-guide-tls-introduction.html">ossl-guide-tls-introduction(7)</a> and check that your trusted certificate store is correctly configured</p>

</dd>
<dt id="Unrecognised-CA">Unrecognised CA</dt>
<dd>

<p>If the CA used by the server&#39;s certificate is not in the trusted certificate store for the client then this will cause a verification failure during connection. Often this can occur if the server is using a self-signed certificate (i.e. a test certificate that has not been signed 