[Bug 1006196] Re: package postfix 2.9.1-4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75

[Chuck Short]

This is due to an invalid hostname:

Setting up postfix (2.9.1-4) ...

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
newaliases: warning: valid_hostname: numeric hostname: 1110011221
newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: 1110011221
dpkg: error processing postfix (--configure):
 subprocess installed post-installation script returned error exit status 75

** Changed in: postfix (Ubuntu)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/1006196

Title:
  package postfix 2.9.1-4 failed to install/upgrade: subprocess
  installed post-installation script returned error exit status 75

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