[Bug 1522678] [NEW] package postfix 2.11.0-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75

[Raghav Gururajan]

Public bug reported:

None of the updates are getting installed. Both programmes and ubuntu
base.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: postfix 2.11.0-1ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-37.42~14.04.1-generic 3.19.8-ckt9
Uname: Linux 3.19.0-37-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
AptOrdering:
 qemu-utils: Install
 postfix: Configure
 qemu-utils: Configure
Architecture: amd64
Date: Fri Dec  4 10:33:16 2015
DuplicateSignature: InvalidHostOrDomain
ErrorMessage: subprocess installed post-installation script returned error exit status 75
EtcMailname: *** /etc/mailname does not exist ***
Hostname: Error: command ['hostname', '--fqdn'] failed with exit code 1: hostname: Name or service not known
InstallationDate: Installed on 2015-09-19 (75 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PostconfMydomain: localdomain
PostconfMyhostname: RG Linux
PostconfMyorigin: $myhostname
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt  1.0.1ubuntu2.10
ResolvConf:
 # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
 #     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
 nameserver 127.0.1.1
 search domain.name
SourcePackage: postfix
Title: package postfix 2.11.0-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: postfix (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-package need-duplicate-check trusty

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Title:
  package postfix 2.11.0-1ubuntu1 failed to install/upgrade: subprocess
  installed post-installation script returned error exit status 75

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