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<a id="user-content-description-of-the-feature" class="anchor" href="#description-of-the-feature" aria-hidden="true"></a>Description of the feature:</h2>
<p dir="auto">XMPP starttls sends the servername before requesting STARTTLS. However, the server might reject that request if the XMPP domains does not match (/host-unknown). This happens specially when "IN SRV" entries are in use for XMPP.</p>
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<a id="user-content-applications-that-this-feature-may-be-relevant-to" class="anchor" href="#applications-that-this-feature-may-be-relevant-to" aria-hidden="true"></a>Applications that this feature may be relevant to:</h2>
<p dir="auto"><code>gnutls-cli --verify-hostname=mydomain.com --starttls-proto=xmpp jabber.mydomain.com:xmpp-client</code></p>
<p dir="auto">--verify-hostname or --sni-hostname does not help. It does work if mydomain.com IN A matches jabber.mydomain.com. However, this should not be a requirement.</p>
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<a id="user-content-is-this-feature-implemented-in-other-libraries-and-which" class="anchor" href="#is-this-feature-implemented-in-other-libraries-and-which" aria-hidden="true"></a>Is this feature implemented in other libraries (and which)</h2>
<p dir="auto"><code>openssl s_client -starttls xmpp -xmpphost mydomain.com -connect jabber.mydomain.com:xmpp-client</code></p>
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