package postfix 2.7.0-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75

[Tom V]

Binary package hint: postfix

ivtv drivers would not install.
ivtv-utils although the software center now reports it is installed.

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: postfix 2.7.0-1
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sun Jul 18 09:54:12 2010
ErrorMessage: subprocess installed post-installation script returned error exit status 75
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
SourcePackage: postfix
Title: package postfix 2.7.0-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75

[Mathias Gug (mathiaz)]

According to the log file:

newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: ubuntvqclts.hsd1.ct.comcast.net.

I'd suggest to fix your hostname or edit myhostname option.