package postfix 2.9.3-2ubuntu2 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 75

[Eliton Luiz]

Configurando postfix (2.9.3-2ubuntu2) ...

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: 10
newaliases: fatal: file /etc/postfix/main.cf: parameter mydomain: bad parameter value: 10
dpkg: erro ao processar postfix (--configure):
 sub-processo script post-installation instalado retornou estado de saída de erro 75
Processando gatilhos para libc-bin ...
ldconfig deferred processing now taking place
Erros foram encontrados durante o processamento de:
 postfix

ProblemType: Package
DistroRelease: Ubuntu 12.10
Package: postfix 2.9.3-2ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic i686
ApportVersion: 2.6.1-0ubuntu3
AptOrdering:
 postfix: Install
 postfix: Configure
Architecture: i386
Date: Tue Oct 23 21:31:27 2012
ErrorMessage: sub-processo script post-installation instalado retornou estado de saída de erro 75
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
SourcePackage: postfix
Title: package postfix 2.9.3-2ubuntu2 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 75
UpgradeStatus: No upgrade log present (probably fresh install)

[Serge Hallyn (serge-hallyn)]

Thanks for reporting this bug.

As the error message indicated, your hostname is purely numeric and not valid. Please change your hostname to something not completely numeric, like 'u10'. Newaliases should then succeed.

Please respond if you need more help to get past this.