A mail server with Postfix installed.


Install a DBMS (MySQL for instance), cluebringer, and cluebringer-webui :

apt-get install mysql-server cluebringer cluebringer-mysql cluebringer-webui

Note that cluebringer-webui will install apache as a dependency if you don’t already have a webserver.

Set-up the Cluebringer database

Get the initial database schema that correspond to your DBMS, for instance mysql :

cp /usr/share/doc/postfix-cluebringer/database/policyd-db.mysql.gz ~/ && gunzip ~/policyd-db.mysql.gz

Create the database, and populate it with the initial dump :

# cd  ~/ && mysql -u root -p
mysql> CREATE DATABASE cluebringer;
mysql> CREATE USER 'cluebringer'@'localhost' IDENTIFIED BY 'mypassword';
mysql> GRANT ALL PRIVILEGES ON cluebringer.* TO 'cluebringer'@'localhost';
mysql> \. policyd-db.mysql
mysql> quit
mysql> Bye

Note that on Debian I had to modify the dump to make it work, TYPE=InnoDB was rejected by MySQL as an invalid syntax.

Configure Cluebringer

Add your DBMS credentials to the file /etc/cluebringer/cluebringer.conf :



And start it :

service postfix-cluebringer start

Configure Cluebringer webui

Configure the file /etc/cluebringer/cluebringer-webui.conf with your DBMS credentials :



Cluebringer Webui needs a web server to run. Copy the sample configuration from the package documentation :

cp /usr/share/doc/postfix-cluebringer-webui/examples/httpd/cluebringer-httpd.conf /etc/apache2/conf.d/

Restart Apache :

service apache2 restart

You may need to adjust a few things to access it from the outside. If you a really lazy, just make a ssh tunnel to access the webserver from localhost :

ssh -L 8008:localhost:80 mylogin@mymailserver

Don’t forget : you have to make this tunnel from the outside, do not run this command on server, it won’t work.

You should now be able to open http://localhost:8080/ and see your fresh new Cluebinger Webui !

Configure Cluebringer using its webui

Add a policy

Under Policies -> Main, disable Test policy (select policy and choose Action -> Change and switch Disabled to yes, validate)

Add a new policy : Action -> Add, give it a name and a description

Activate your new policy : select policy and choose Action -> Change (switch Disabled to no)

Add a new member to your policy : select it and choose Action -> Members, and then Action -> Add. Specify any as source and any as destination.

Go back to your policy, choose Action -> Members, and the select your member, do Action -> Change, and activate your new member (switch Disabled to no).

Add a quota

Under Quotas -> Configure, disable Test quotas.

Add a new quota : Choose Action -> Add

  • Name : whatever you want
  • Track : user@domain
  • Period (seconds) : 3600
  • Link to policy : specify the policy you created here
  • Verdict : Defer
  • Data : set a custom error message here
  • Comment : whatever you want

Activate your quota : switch Disabled to no.

Add a limit to your quota : select your quota, and choose Action -> Limits, then Action -> Add.

  • Type : MessageCount
  • Counter Limit : 200

Activate your limit : switch Disabled to no.

Configure Postfix to call Cluebringer for each mail sent

Open /etc/postfix/ and locate the line smtpd_sender_restrictions.

Add check_policy_service inet: at the end of the line, for instance :

smtpd_sender_restrictions = check_sender_access mysql:/etc/postfix/, check_policy_service inet:

If the line does not exists, simply add it.

Don’t forget to restart Postfix :

service postfix restart

Check your config

You can now send some mails to see what happens. To check if these mails are passed to Cluebringer, connect to MySQL as the cluebringer user :

# mysql -u cluebringer -p cluebringer

And execute the query :

mysql> SELECT * FROM quotas_tracking;

You should see the value LastUpdate and Counter updating when sending a mail. Note that sending to multiple recipient will count like multiple mails were sent.

Pitfalls, bleeding edges, etc

Cluebringer versions prior to 2.1.x does not support IPv6, your customers won’t be able to send any mail if they have an IPv6 connection.

Unfortunately, the Debian stable version (wheezy) provides Cluebringer 2.0.10 within its repositories, as well as the experimental release of Debian (sid). As an alternative, you should consider installing the 2.1.x experimental Cluebringer from official website instead of Debian packages from repositories.