package heirloom-mailx 12.5-2+deb7u1build0.14.04.1 failed to install/upgrade: package heirloom-mailx is already installed and configured

[Rahul Palkar]

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ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: heirloom-mailx 12.5-2+deb7u1build0.14.04.1
ProcVersionSignature: Ubuntu 3.11.0-23.40-generic 3.11.10.10
Uname: Linux 3.11.0-23-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
AptOrdering:
 gsmartcontrol: Install
 sagemath-upstream-binary: Configure
 heirloom-mailx: Configure
 smartmontools: Configure
 gsmartcontrol: Configure
AptdaemonVersion: 1.1.1-1ubuntu5.1
Architecture: amd64
CrashReports:
 600:0:114:111234:2015-06-08 15:29:08.021547555 +0530:2015-06-08 15:29:09.021547555 +0530:/var/crash/smartmontools.0.crash
 644:0:114:0:2015-06-08 15:28:08.233548877 +0530:2015-06-08 15:28:08.233548877 +0530:/var/crash/sagemath-upstream-binary.0.upload
 600:0:114:106884:2015-06-08 15:28:20.717548608 +0530:2015-06-08 15:29:08.961547551 +0530:/var/crash/sagemath-upstream-binary.0.crash
 600:108:114:0:2015-06-08 15:28:11.921548796 +0530:2015-06-08 15:28:11.921548796 +0530:/var/crash/sagemath-upstream-binary.0.uploaded
 600:0:114:111249:2015-06-08 15:29:07.997547626 +0530:2015-06-08 15:29:08.997547626 +0530:/var/crash/heirloom-mailx.0.crash
Date: Mon Jun 8 15:29:08 2015
DuplicateSignature: package:heirloom-mailx:12.5-2+deb7u1build0.14.04.1:package heirloom-mailx is already installed and configured
ErrorMessage: package heirloom-mailx is already installed and configured
InstallationDate: Installed on 2013-10-07 (610 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64+mac (20130925.1)
SourcePackage: heirloom-mailx
Title: package heirloom-mailx 12.5-2+deb7u1build0.14.04.1 failed to install/upgrade: package heirloom-mailx is already installed and configured
UpgradeStatus: Upgraded to trusty on 2014-06-13 (361 days ago)