Comment 1 for bug 42947

I can confirm this bug on Ubuntu 6.06 AMD64 with all the latest updates.

$ sudo apt-get install --reinstall postfix
Reading package lists... Done
Building dependency tree... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Do you want to continue [Y/n]? Y
Setting up postfix (2.2.10-1ubuntu0.1) ...

Postfix configuration was not changed. If you need to make changes, edit
/etc/postfix/main.cf (and others) as needed. To view Postfix configuration
values, see postconf(1).

After modifying main.cf, be sure to run '/etc/init.d/postfix reload'.

Running newaliases
postalias: warning: /etc/aliases.db: duplicate entry: "news"
 * Stopping Postfix Mail Transport Agent postfix [ ok ]
 * Starting Postfix Mail Transport Agent postfix postfix: fatal: /etc/postfix/postfix-script: No such file or directory
                                                                         [fail]
invoke-rc.d: initscript postfix, action "restart" failed.
dpkg: error processing postfix (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 postfix
E: Sub-process /usr/bin/dpkg returned an error code (1)