···199 <link linkend="opt-services.xserver.displayManager.sx.enable">services.xserver.displayManager.sx</link>
200 </para>
201 </listitem>
202+ <listitem>
203+ <para>
204+ <link xlink:href="https://postfixadmin.sourceforge.io/">postfixadmin</link>,
205+ a web based virtual user administration interface for Postfix
206+ mail servers. Available as
207+ <link linkend="opt-services.postfixadmin.enable">postfixadmin</link>.
208+ </para>
209+ </listitem>
210 </itemizedlist>
211 </section>
212 <section xml:id="sec-release-21.11-incompatibilities">
+2
nixos/doc/manual/release-notes/rl-2111.section.md
···6061- [sx](https://github.com/earnestly/sx), a simple alternative to both xinit and startx for starting a Xorg server. Available as [services.xserver.displayManager.sx](#opt-services.xserver.displayManager.sx.enable)
620063## Backward Incompatibilities {#sec-release-21.11-incompatibilities}
6465- The `paperless` module and package have been removed. All users should migrate to the
···6061- [sx](https://github.com/earnestly/sx), a simple alternative to both xinit and startx for starting a Xorg server. Available as [services.xserver.displayManager.sx](#opt-services.xserver.displayManager.sx.enable)
6263+- [postfixadmin](https://postfixadmin.sourceforge.io/), a web based virtual user administration interface for Postfix mail servers. Available as [postfixadmin](#opt-services.postfixadmin.enable).
64+65## Backward Incompatibilities {#sec-release-21.11-incompatibilities}
6667- The `paperless` module and package have been removed. All users should migrate to the