[Bug 972603] Re: package amavisd-new-postfix 1:2.6.5-0ubuntu3 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

[Clint Byrum]

Hello atif. The terminal shows this as the full error message:

Starting amavisd: head: cannot open `/etc/mailname' for reading: No such file or directory
  The value of variable $myhostname is "atifalhazmi-CX500DX", but should have been
  a fully qualified domain name; perhaps uname(3) did not provide such.
  You must explicitly assign a FQDN of this host to variable $myhostname
  in /etc/amavis/conf.d/05-node_id, or fix what uname(3) provides as a host's 
  network name!
(failed).
invoke-rc.d: initscript amavis, action "restart" failed.

It seems your network is not giving your machine a fully qualified
domain name, and you have not configured the system's mailname
parameter.

I would suggest running

sudo dpkg-reconfigure postfix

Which should set /etc/mailname if you give your system one, then to
finish amavisd's configuration:

sudo dpkg --configure -a

Please report back here if that fixes your problem. Marking Incomplete
pending response.

** Changed in: amavisd-new (Ubuntu)
       Status: New => Incomplete

** Changed in: amavisd-new (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/972603

Title:
  package amavisd-new-postfix 1:2.6.5-0ubuntu3 failed to
  install/upgrade: ErrorMessage: subprocess installed post-installation
  script returned error exit status 1

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