Install All Required Packages

You can use either apt-get or aptitude. We prefer aptitude. First of all update your repository tree ("u" command). Then ensure that the following packages are installed:

amavisd-new apache2 build-essential cabextract clamav-daemon debhelper dovecot-imapd dovecot-pop3d dpatch elinks fakeroot libcdb-dev libclass-dbi-mysql-perl phpmyadmin libapache2-mod-php5 libdb-dev libgdbm-dev libldap2-dev libmysqlclient15-dev libpam-mysql libpam-smbpass libpcre3-dev libpq-dev libsasl2-2 libsasl2-modules libsasl2-modules-sql libsasl2-dev libssl-dev mutt mysql-server nomarch openssl pax php5 php5-dev php5-mysql php-pear postfix postfix-doc postfix-mysql sasl2-bin spamassassin squirrelmail squirrelmail-decode vim vim-runtime

When asked about configuration options proceed as follows (replace example.com with appropriate domain):

MySQL root password: opensesame
Postfix Configuration: Internet Site
System Mail Name: example.com
phpMyAdmin Configuration: apache2

If you are a vim user, you may want to enable vim syntax highlighting by uncommenting the syntax on line in /etc/vim/vimrc configuration file:

vim /etc/vim/vimrc

  syntax on

Apply the Quota Patch to Postfix

We need to download Postfix sources, apply the quota patch, build new .deb packages and install them.

cd /usr/src
apt-get source postfix

Now we download the Postfix Virtual Delivery Agents (VDA) patches by Anderson Nadal (http://vda.sourceforge.net/). Keep sure you are downloading the appropriate version for your server. If in doubt, the following command will display your Postfix version:

postconf | grep ^mail_version

 mail_version = 2.5.1

In our case we download the patch for version 2.5.1:

wget http://vda.sourceforge.net/VDA/postfix-2.5.1-vda-ng.patch.gz
gunzip postfix-2.5.1-vda-ng.patch.gz

This should unpack the postfix-2.5.1-vda-ng.patch file which must be applied in order to have support for user quota.

cd postfix-2.5.1
patch -p1 < ../postfix-2.5.1-vda-ng.patch
dpkg-buildpackage

If you see the following message once the compilation ends, don’t worry, it’s as expected:

dpkg-buildpackage: warning: Failed to sign .dsc and .changes file

Now move to the upper directory, where the freshly genereated .deb files reside:

cd ..
ls -1 *.deb

postfix_2.5.1-2ubuntu1.1_i386.deb
postfix-cdb_2.5.1-2ubuntu1.1_i386.deb
postfix-dev_2.5.1-2ubuntu1.1_all.deb
postfix-doc_2.5.1-2ubuntu1.1_all.deb
postfix-ldap_2.5.1-2ubuntu1.1_i386.deb
postfix-mysql_2.5.1-2ubuntu1.1_i386.deb
postfix-pcre_2.5.1-2ubuntu1.1_i386.deb
postfix-pgsql_2.5.1-2ubuntu1.1_i386.deb

(The actual versions of your compiled packages may differ slightly.)

Then we install patched postfix and postfix-mysql packages:

dpkg -i postfix_2.5.1-2ubuntu1.1_i386.deb
dpkg -i postfix-mysql_2.5.1-2ubuntu1.1_i386.deb