diff -pruN 0.8-1/debian/changelog 0.8-1ubuntu2/debian/changelog
--- 0.8-1/debian/changelog	2022-12-28 14:47:16.000000000 +0000
+++ 0.8-1ubuntu2/debian/changelog	2024-05-12 16:16:11.000000000 +0000
@@ -1,3 +1,20 @@
+quickml (0.8-1ubuntu2) oracular; urgency=medium
+
+  * d/postrm: Do not remove /etc/mailname on purge. It contains default
+    host name for outgoing mail and is used my many other application
+    (LP: #1921914)
+
+ -- Sudip Mukherjee <sudipm.mukherjee@gmail.com>  Sun, 12 May 2024 17:16:11 +0100
+
+quickml (0.8-1ubuntu1) oracular; urgency=medium
+
+  * Fix quickml failure to install. (LP: #1921914)
+    - d/control: Add runtime dependency on ruby-thwait.
+    - d/postinst: Create /etc/mailname if it does not exist.
+    - d/postrm: Remove /etc/mailname.
+
+ -- Sudip Mukherjee <sudipm.mukherjee@gmail.com>  Mon, 29 Apr 2024 20:33:04 +0100
+
 quickml (0.8-1) unstable; urgency=medium
 
   * New upstream release.
diff -pruN 0.8-1/debian/control 0.8-1ubuntu2/debian/control
--- 0.8-1/debian/control	2022-12-28 14:47:01.000000000 +0000
+++ 0.8-1ubuntu2/debian/control	2024-05-12 16:16:11.000000000 +0000
@@ -1,7 +1,8 @@
 Source: quickml
 Section: mail
 Priority: optional
-Maintainer: Benda Xu <orv@debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Benda Xu <orv@debian.org>
 Build-Depends: debhelper-compat (= 13)
 Build-Depends-Indep: ruby, ruby-dev
 Standards-Version: 4.5.0
@@ -9,7 +10,7 @@ Standards-Version: 4.5.0
 Package: quickml
 Architecture: all
 Pre-Depends: ${misc:Pre-Depends}
-Depends: ruby:any, lsb-base, ${misc:Depends}
+Depends: ruby:any, lsb-base, ruby-thwait, ${misc:Depends}
 Description: Very-easy-to-use mailing list system
  quickml server is a very-easy-to-use mailing list system.
  quickml server provides very-easy-to-use mailing list service.
diff -pruN 0.8-1/debian/postinst 0.8-1ubuntu2/debian/postinst
--- 0.8-1/debian/postinst	2022-12-28 14:43:34.000000000 +0000
+++ 0.8-1ubuntu2/debian/postinst	2024-05-12 16:16:11.000000000 +0000
@@ -26,6 +26,9 @@ set -e
 case "$1" in
     configure)
 	chown list:list /var/lib/quickml /var/log/quickml
+	if [ ! -e /etc/mailname ]; then
+		touch /etc/mailname
+	fi
     ;;
 
     abort-upgrade|abort-remove|abort-deconfigure)