diff --git a/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
index b422c3cf058b..65abc8ac4820 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
@@ -199,6 +199,14 @@
services.xserver.displayManager.sx
+
+
+ postfixadmin,
+ a web based virtual user administration interface for Postfix
+ mail servers. Available as
+ postfixadmin.
+
+
diff --git a/nixos/doc/manual/release-notes/rl-2111.section.md b/nixos/doc/manual/release-notes/rl-2111.section.md
index 548008fe24bc..ae6ccf932987 100644
--- a/nixos/doc/manual/release-notes/rl-2111.section.md
+++ b/nixos/doc/manual/release-notes/rl-2111.section.md
@@ -60,6 +60,8 @@ subsonic-compatible api. Available as [navidrome](#opt-services.navidrome.enable
- [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)
+- [postfixadmin](https://postfixadmin.sourceforge.io/), a web based virtual user administration interface for Postfix mail servers. Available as [postfixadmin](#opt-services.postfixadmin.enable).
+
## Backward Incompatibilities {#sec-release-21.11-incompatibilities}
- The `paperless` module and package have been removed. All users should migrate to the