package courier-mta 0.78.0-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Bayu Sanjaya]

no courier-imap when tried to install courier-mta

ProblemType: Package
DistroRelease: Ubuntu 17.10
Package: courier-mta 0.78.0-2
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Uname: Linux 4.13.0-17-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.5
Architecture: amd64
Date: Wed Nov 29 14:18:11 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-07-24 (859 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal, 2.7.14-2ubuntu1
RelatedPackageVersions:
 dpkg 1.18.24ubuntu1
 apt 1.5.1
SourcePackage: courier
Title: package courier-mta 0.78.0-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[tom (tmassimi)]

how to fix it:

Okay so I'll just add this to my /etc/courier/imapd:
    IMAPACCESSFILE=${sysconfdir}/imapaccess

Problem solved. Packages install fine now.

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815956