Please participate in the Ubuntu Popularity Contest !

[Christofer C. Bell]

On 7/16/06, paul cooke <paul.cooke100 at blueyonder.co.uk> wrote:
> On Thursday 13 July 2006 09:18, Lucas Nussbaum wrote:
> > Popcon's data is of big importance to Ubuntu developers. Using it, they
> > know which packages are the most used ones, so they can prioritize some
> > tasks such as bug fixing, backporting new releases, etc.
> >
> > = How can I participate in popcon ? =
> >
> > Just reconfigure the popularity-contest (it is installed by default, but
> > disabled):
> >
> > sudo dpkg-reconfigure popularity-contest
>
> Done that... but I get these bounces...

postfix is not properly configured out of the box because Ubuntu is
not properly configured out of the box.  You need to make the
following changes to your system:

* In /etc/hosts:

+ Remove the line that references IP address 127.0.1.1.
+ Remove the hostname from the line that references IP address 127.0.0.1.
+ Create a correct entry for your machine with IP address, FQDN, and hostname.

* In /etc/hostname

+ Set the name to your FQDN.

* In /etc/postfix/main.cf

+ Set the variable 'myname' to your FQDN.

* Avoid any use of the Networking control panel as it will silently
add your hostname or FQDN to the 127.0.0.1 IP address (if you do use
the tool, then edit /etc/hosts again to remove it).

Verify that the above changes have worked thusly:

$ hostname
(returns FQDN)

$ hostname -f
(returns FQDN)

$ telnet localhost 25
Use the HELO command, this should return either your FQDN or your IP
address enclosed in brackets.  (Usage: HELO some.domain.com).

If the check procedure indicates that your changes have not taken
effect, then reboot your machine and try them again, they should be
working then.

The danger in the Ubuntu setup is that it can (and will) land your
machine in the CBL blacklist for having a non-RFC compliant mail
system.  The non-compliance is that your machine responds with either
localhost, localhost.localdomain, or 127.0.0.1 to a HELO command.

Note that if you configure your Ubuntu system correctly prior to
installing postfix, then postfix will install properly configured out
of the box (with a correct 'myname' entry).

-- 
Chris

"I trust the Democrats to take away my money, which I can afford.  I
trust the Republicans to take away my freedom, which I cannot."