Please see [this Wikipedia article](https://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions) about what DNSSEC is.
Please see [this article](https://github.com/internetstandards/toolbox-wiki/blob/main/DANE-for-SMTP-how-to.md) about what DANE is.
Alternatively, see [this Wikipedia article](https://en.wikipedia.org/wiki/DNS-based_Authentication_of_Named_Entities).
You can use [this tool](https://ssl-tools.net/tlsa-generator) to generate TSLA DNS records.
You can enable enforcing DANA in the (advanced) account and identity settings (since version 1.2148).
You can use [this tool](https://ssl-tools.net/tlsa-generator) to generate TSLA DNS records for DANE.
Note that only some email servers support DANE and that only a limited number of DNS servers support DNSSEC, which is required for DANE.
You can enable enforcing DNSSEC and/or DANA in the (advanced) account and identity settings (since version 1.2148).
Except for DANE, FairEmail won't enforce DNSSEC because adoption of DNSSEC is still limited (~30% at the start of 2024).
Note that only some email providers support DANE and that only a limited number of DNS servers support DNSSEC (January 2024: ~30%), which is required for DANE.
<p>When certificate transparency is enabled in the connection-settings tab page of the app, the <ahref="https://github.com/GoogleChrome/CertificateTransparency/blob/master/ct_policy.md">Chrome Certificate Transparency Policy</a> will be applied.</p>
<p>FairEmail uses <ahref="https://github.com/appmattus/certificatetransparency">this library</a> to implement certificate transparency via a custom trust manager.</p>
<p><br></p>
<p><aname="faq202"></a><strong>(202) What is DANE?</strong></p>
<p><aname="faq202"></a><strong>(202) What is DNSSEC and what is DANE?</strong></p>
<p>Please see <ahref="https://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions">this Wikipedia article</a> about what DNSSEC is.</p>
<p>Please see <ahref="https://github.com/internetstandards/toolbox-wiki/blob/main/DANE-for-SMTP-how-to.md">this article</a> about what DANE is. Alternatively, see <ahref="https://en.wikipedia.org/wiki/DNS-based_Authentication_of_Named_Entities">this Wikipedia article</a>.</p>
<p>You can use <ahref="https://ssl-tools.net/tlsa-generator">this tool</a> to generate TSLA DNS records.</p>
<p>You can enable enforcing DANA in the (advanced) account and identity settings (since version 1.2148).</p>
<p>Note that only some email servers support DANE and that only a limited number of DNS servers support DNSSEC, which is required for DANE.</p>
<p>Except for DANE, FairEmail won’t enforce DNSSEC because adoption of DNSSEC is still limited (~30% at the start of 2024).</p>
<p>You can use <ahref="https://ssl-tools.net/tlsa-generator">this tool</a> to generate TSLA DNS records for DANE.</p>
<p>You can enable enforcing DNSSEC and/or DANA in the (advanced) account and identity settings (since version 1.2148).</p>
<p>Note that only some email providers support DANE and that only a limited number of DNS servers support DNSSEC (January 2024: ~30%), which is required for DANE.</p>