Article ID: 116316, created on Jun 21, 2013, last review on Apr 9, 2015

  • Applies to:
  • Plesk 11.x for Linux
  • Plesk 10.x for Linux


Installation fails, because Postfix package cannot be configured properly:

newaliases: warning: valid_hostname: numeric hostname: 10
newaliases: fatal: file /etc/postfix/ parameter myhostname: bad parameter value: 10
dpkg: error processing postfix (--configure):
subprocess installed post-installation script returned error exit status 75
dpkg: dependency problems prevent configuration of mailman:
mailman depends on exim4 | mail-transport-agent; however:
Package exim4 is not installed.
Package mail-transport-agent is not installed.
Package postfix which provides mail-transport-agent is not configured yet.
dpkg: error processing mailman (--configure):
dependency problems - leaving unconfigured


Hostname, reported by hostname -f command is not a valid FQDN (Fully Qualified Domain Name).


The problem affects only Debian/Ubuntu OSes.

Set correct hostname on the server:

~# echo "myserver.test" > /etc/hostname
~# /etc/init.d/hostname start

dd0611b6086474193d9bf78e2b293040 56797cefb1efc9130f7c48a7d1db0f0c a914db3fdc7a53ddcfd1b2db8f5a1b9c 29d1e90fd304f01e6420fbe60f66f838 0a53c5a9ca65a74d37ef5c5eaeb55d7f

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