Mail-in-a-Box with Quotas

This is an experimental implementation of Mail-in-a-box with quota support.

Quotas can be set and viewed in the control panel

To set quotas from the command line, use:

tools/mail.py user quota <email> <quota>

To set the system default quota for new users, use:

tools/mail.py system default-quota <quota>

Mailbox size recalculation by Dovecot can be forced using the command:

doveadm quota recalc -A

Please report any bugs on github.

Installing v0.40-quota

Follow the directions below for installing from a repository except clone from this repository instead of the official one.

Upgrading v0.40 to v.0.40-quota

This is experimental software. You have been warned.

• Rename your mailinabox directory to something like miab.old

• Clone this repository using:

  git clone https://github.com/jrsupplee/mailinabox.git

• cd into mailinabox and run sudo setup/start.sh On occasion there are lock errors when updating Munin. Just re-run sudo setup/start.sh until the error does not occur.

Upgrading v.0.40-quota to a New Version

• Remember that this is experimental software and review the changes in the repository.

• cd into the mailinabox directory.

• Execute git pull to download the latest changes.

• Execute sudo bash setup/bootstrap.sh to checkout the latest version and re-run setup.

Issues

• When a user's quota is changed, any IMAP session running for that user will not recognize the new quota. To solve this a dovecot reload could be issued causing all current IMAP sessions to be terminated. On a system with many users, it might not be desirable to reset all users sessions to fix the quota for one user. Also if the administrator is setting the quota for several users it would result in the continual reset of those connections.

Changes

v0.40-quota-0.15-alpha

• Fix bug where quotas are not recalculated when a user's quota is changed in control panel

v0.40-quota-0.14-alpha

• When updating a user's quota, execute doveadm quota recalc -u <email> to forces an immediate recalculation of the user's quota.

• Add a thousands separator (,) to the messages count in the control panel user list.

• Execute doveadm quota recalc -A to force a recalculation of all user quotas when running start.sh.

• Get rid of the error message complaining that the quota column already exists when upgrading from a previous version of v0.40-quota.

v0.40-quota-0.13-alpha

• Add a default-quota setting in settings.yaml.

• Add input for setting quota when entering a new user in control panel.

• Modify tools/mail.py to allow for setting and getting the default system quota.

• Modify tools/mail.py to allow for getting a user's quota setting.

• Modify the mail users list in control panel to display percentage of quota used.

v0.40-quota-0.12-alpha

• Update README

v0.40-quota-0.11-alpha

• Read latest version from this repository not the Mail-in-a-Box master repository

v0.40-quota-0.1-alpha

• First experimental release of Mail-in-a-Box for quotas.
• Quotas are working and there is basic support in the control panel and tools/mail.py.

Reference Documents

• https://blog.sys4.de/postfix-dovecot-mailbox-quota-en.html
• https://linuxize.com/post/install-and-configure-postfix-and-dovecot/

[BEGIN Official README]

Mail-in-a-Box

By @JoshData and contributors.

Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

Please see https://mailinabox.email for the project's website and setup guide!

---

Our goals are to:

• Make deploying a good mail server easy.
• Promote decentralization, innovation, and privacy on the web.
• Have automated, auditable, and idempotent configuration.
• Not make a totally unhackable, NSA-proof server.
• Not make something customizable by power users.

Additionally, this project has a Code of Conduct, which supersedes the goals above. Please review it when joining our community.

The Box

Mail-in-a-Box turns a fresh Ubuntu 18.04 LTS 64-bit machine into a working mail server by installing and configuring various components.

It is a one-click email appliance. There are no user-configurable setup options. It "just works".

The components installed are:

• SMTP (postfix), IMAP (dovecot), CardDAV/CalDAV (Nextcloud), Exchange ActiveSync (z-push)
• Webmail (Roundcube), static website hosting (nginx)
• Spam filtering (spamassassin), greylisting (postgrey)
• DNS (nsd4) with SPF, DKIM (OpenDKIM), DMARC, DNSSEC, DANE TLSA, and SSHFP records automatically set
• Backups (duplicity), firewall (ufw), intrusion protection (fail2ban), system monitoring (munin)

It also includes:

• A control panel and API for adding/removing mail users, aliases, custom DNS records, etc. and detailed system monitoring.

For more information on how Mail-in-a-Box handles your privacy, see the security details page.

Installation

See the setup guide for detailed, user-friendly instructions.

For experts, start with a completely fresh (really, I mean it) Ubuntu 18.04 LTS 64-bit machine. On the machine...

Clone this repository:

$ git clone https://github.com/mail-in-a-box/mailinabox
$ cd mailinabox

Optional: Download Josh's PGP key and then verify that the sources were signed by him:

$ curl -s https://keybase.io/joshdata/key.asc | gpg --import
gpg: key C10BDD81: public key "Joshua Tauberer <jt@occams.info>" imported

$ git verify-tag v0.40
gpg: Signature made ..... using RSA key ID C10BDD81
gpg: Good signature from "Joshua Tauberer <jt@occams.info>"
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 5F4C 0E73 13CC D744 693B  2AEA B920 41F4 C10B DD81

You'll get a lot of warnings, but that's OK. Check that the primary key fingerprint matches the fingerprint in the key details at https://keybase.io/joshdata and on his personal homepage. (Of course, if this repository has been compromised you can't trust these instructions.)

Checkout the tag corresponding to the most recent release:

$ git checkout v0.40

Begin the installation.

$ sudo setup/start.sh

For help, DO NOT contact Josh directly --- I don't do tech support by email or tweet (no exceptions).

Post your question on the discussion forum instead, where maintainers and Mail-in-a-Box users may be able to help you.

Contributing and Development

Mail-in-a-Box is an open source project. Your contributions and pull requests are welcome. See CONTRIBUTING to get started.

The Acknowledgements

This project was inspired in part by the "NSA-proof your email in 2 hours" blog post by Drew Crawford, Sovereign by Alex Payne, and conversations with @shevski, @konklone, and @GregElin.

Mail-in-a-Box is similar to iRedMail and Modoboa.

The History

• In 2007 I wrote a relatively popular Mozilla Thunderbird extension that added client-side SPF and DKIM checks to mail to warn users about possible phishing: add-on page, source.
• In August 2013 I began Mail-in-a-Box by combining my own mail server configuration with the setup in "NSA-proof your email in 2 hours" and making the setup steps reproducible with bash scripts.
• Mail-in-a-Box was a semifinalist in the 2014 Knight News Challenge, but it was not selected as a winner.
• Mail-in-a-Box hit the front page of Hacker News in April 2014, September 2014, May 2015, and November 2016.
• FastCompany mentioned Mail-in-a-Box a roundup of privacy projects on June 26, 2015.