Re: Preseeding Postfix for No configuration

[Erik <erik@vanlinsteeict.nl>]

On 16-12-2020 18:24, Dan Ritter wrote:
> Erik wrote:
> > I am doing an unattended install of Debian Buster with postfix being
> > added using apt-install in the preseed/late_command.
> >
> > Without a postfix preseed definition in my preeseed file, I get the expected
> > question about what kind of mail configuration I would like.
> > When I select "No configuration", installation continues as expected and I
> > end up with a postfix installation without main.cf and without master.cf.
> >
> > But when I preseed postfix with "d-i postfix/main_mailer_type select No
> > configuration"
> > as both debconf-get-selections and
> > https://preseed.debian.net/debian-preseed/buster/amd64-main-full.txt
> > confirm I should do, I get an extra question asking me about the system mail
> > name.
> > Clearly, this question is out of place for a "No configuration" install.
> > And as a result I end up with a main.cf and a master.cf, which contradicts
> > the "No configuration".
> >
> > So something is going wrong. Apparently the preseeded selection for
> > configuration type is accepted, as that question is not asked, but it
> > is not interpreted as "No configuration".
> If you don't want any configuration, you must be supplying
> configuration later on -- so why don't you refrain from
> installing postfix via the preseed, and install it later when
> you are ready to configure it?

Because the configuration is preseeded as well. The installl is entirely 
unattended
and the apt-install is supposed to only install Postfix itself. After 
that, the configuration
will be added automatically too.

Of course I can overwrite the files that get installed, but that's not 
the point here.
The point is that there is a bug somewhere that makes the installer do 
the wrong
thing when the same answer as given manually, is given via preseeding.
The same answer should not lead to different results.

I can deal with this bug, now I know it's there.

Erik