[Bug 1550749] [NEW] package postfix 3.0.4-3 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1

[flocculant]

Public bug reported:

Normal update and upgrade today I get postfix failing to upgrade.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: postfix 3.0.4-5
ProcVersionSignature: Ubuntu 4.4.0-7.22-generic 4.4.2
Uname: Linux 4.4.0-7-generic x86_64
ApportVersion: 2.20-0ubuntu3
AptOrdering:
 postfix: Install
 postfix: Configure
 NULL: ConfigurePending
Architecture: amd64
Date: Sat Feb 27 13:50:20 2016
DuplicateSignature: InvalidHostOrDomain
ErrorMessage: subprocess new pre-installation script returned error exit status 1
EtcMailname: *** /etc/mailname does not exist ***
Hostname: wolf
InstallationDate: Installed on 2015-10-29 (121 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151029)
PostconfMydomain: Error: command ['/usr/sbin/postconf', '-h', 'mydomain'] failed with exit code 1: /usr/sbin/postconf: fatal: open /etc/postfix/main.cf: No such file or directory
PostconfMyhostname: Error: command ['/usr/sbin/postconf', '-h', 'myhostname'] failed with exit code 1: /usr/sbin/postconf: fatal: open /etc/postfix/main.cf: No such file or directory
PostconfMyorigin: Error: command ['/usr/sbin/postconf', '-h', 'myorigin'] failed with exit code 1: /usr/sbin/postconf: fatal: open /etc/postfix/main.cf: No such file or directory
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt  1.2.3
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 Home
SourcePackage: postfix
Title: package postfix 3.0.4-3 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

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


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

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to postfix in Ubuntu.
https://bugs.launchpad.net/bugs/1550749

Title:
  package postfix 3.0.4-3 failed to install/upgrade: subprocess new pre-
  installation script returned error exit status 1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1550749/+subscriptions