[Bug 934011] Re: package postfix 2.7.0-1ubuntu0.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75

[Clint Byrum]

Hi Seetharam, thanks for taking the time to file this bug and help us
make Ubuntu better.

Your hostname is not valid as a mail host name, so postfix is refusing
to start. This is commonly attributed to a poorly configured cable modem
or router which hands out invalid hostnames with underscores in the
names or numbers as the first characters.

You can verify this by looking at /etc/hostname and /etc/mailname, both
files can be edited to be something more correct for postfix. Once it is
appropriate, 'dpkg --configure -a' should finish configuring postfix.

This is not a bug in postfix though, so closing as Invalid.

** Changed in: postfix (Ubuntu)
       Status: New => Invalid

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Title:
  package postfix 2.7.0-1ubuntu0.2 failed to install/upgrade: subprocess
  installed post-installation script returned error exit status 75

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