I have been using 13.10 only but after two weeks ago needed to install 12.04 to. With the default guest account I am getting other bunch of accounts as you can see:
I have used to disable guest account when installing 13.10 but have no idea what are these alias and qmail accounts for?
Other issue is that each time I try to update my 12.04 from the Update Manager or with sudo apt-get install I am getting errors like this:
The hostname -f command returned: $1
Your system needs to have a fully qualified domain name (fqdn) in
order to install the var-qmail packages.
Installation aborted.
dpkg: error processing qmail (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of qmail-run: qmail-run depends on qmail (>= 1.06-2.1); however: Package qmail is not configured yet. dpkg: error processing qmail-run (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing: qmail qmail-run E: Sub-process /usr/bin/dpkg returned an error code (1)
Could you advice if it will be OK to disable these accounts and maybe try to delete this qmail stuff?