package qmail-uids-gids 1.06-4 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück

[Gerd Feiler]

dpkg: Fehler beim Bearbeiten von qmail-uids-gids (--configure):
 Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
Es wurde kein Apport-Bericht verfasst, da das Limit MaxReports bereits erreicht ist

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: qmail-uids-gids 1.06-4
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic-pae 3.2.18
Uname: Linux 3.2.0-25-generic-pae i686
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
Date: Sat Jun 16 11:16:28 2012
ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
PackageArchitecture: all
SourcePackage: netqmail
Title: package qmail-uids-gids 1.06-4 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel Reimer (uiaeuiae)]

Install log:

"The hostname -f command returned: $1

Your system needs to have a fully qualified domain name (fqdn) in
order to install the var-qmail packages.

Installation aborted."

[peter (peter-heintzmann)]

So far so good, and how I get rid of this message. In regards to a linux training I wanted to use show and was asked to install the package nmh. So I did, got the message with the domain. everything understood.
But what ist to do next if I don't want to create a domain?