[Bug 990159] Re: package postfix 2.9.1-4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75

[Clint Byrum]

Hi Jeremy, thanks for taking the time to file this bug report. Error
code 75 means that your hostname is not suitable for use in a mail
server. It might contain invalid characters or be formatted slightly
wrong. Check /etc/mailname and /etc/hostname. You can work around this
by entering a different hostname in postfix's configuration by doing
'sudo dpkg-reconfigure postfix'.

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

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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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