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https://github.com/dbmail/dbmail

DBMail: fast and scalable email services
https://github.com/dbmail/dbmail

imap-server lmtp-server mysql pop3-server postgresql sqlite

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DBMail: fast and scalable email services

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README 

        
# DBMail



> Copyright (c) 2020-2024 Alan Hicks, Persistent Objects Ltd [email protected]

>

> Copyright (c) 2014-2019 Paul J Stevens, The Netherlands, [email protected]

>

> Copyright (c) 2004-2013 NFG Net Facilities Group BV [email protected]

>

> Copyright (c) 2000-2006 IC&S, The Netherlands



## What is it?



DBMail is a collection of programs that enables email to be managed, stored in and

retrieved from a database. 



## Why is it useful?



- Securely and scaleably manages user emails with industry standard IMAP;



- Integrates with existing authentication backends including ActiveDirectory

  and OpenLDAP;



- DBMail is scalable including multiple terrabyte installations;



- DBMail is flexible. You can run dbmail programs on different servers talking

  to the same database;



- Email filtering is integrated into DBMail and managed using SIEVE;



- An experimental Docker image is available;



- High Availability thanks to database replication and Docker images;



- Data safety thanks to database replication;



- Secure connections thanks to TLS;



- DBMail is database driven so no need of systemusers;



- No need to maintain system users or write access to the filesystem;



- DBMail is Free with a recognised GPL2 Open Source licence.



## Who created it?



DBMail was originally created by IC&S in the Netherlands.



Around 2003, Paul Stevens at NFG also joined the development team, initially to provide debian

packaging, later to take over development of the 2.1 release. Aaron Stone also deserves special

thanks for initiating the LDAP driver, maintaining the delivery chain and of course sieve support.



DBMail is now a community effort to create a fast, effecient and scalable database driven

mailingsystem. Both IC&S and NFG are fully behind opensource and the GPL. Therefore DBMail has the

GPL licence.



## Support



Support is available by raising an issue at https://github.com/dbmail/dbmail



### Architecture



For an architectural overview of DBMail and its components please visit:

https://dbmail.org/architecture/



## Future



Check the website for further DBMail plans.



## What kind of licence is DBMail?



DBMail uses the GPL version 2 licence. 



It's included in the COPYING file.



## How do I install it?



DBMail is available on many Linux and BSD distributions.



There is also an experimental

[Docker image](https://hub.docker.com/r/alanhicks/dbmail)

with instructions to configure compose.yaml at

https://dbmail.org/docker/



## Installation Procedure



Check README and INSTALL files and on https://dbmail.org for detailed

information and HOWTOs including how to use the Docker image.



See also contrib, debian and docker on https://github.com/dbmail/dbmail



### Configuration



There are various settings including database access, authentication and

logging. Please see dbmail.conf or https://dbmail.org/man-pages/dbmailconf/



Exim is a modern MTA and there is an example configure at

https://github.com/dbmail/dbmail/blob/main/contrib/exim-dbmail-configure



### Integration



DBMail integrates with most MTAs. There are a number of examples on

https://dbmail.org/docs/



Web frontends including [SquirrelMail](https://squirrelmail.org/) and

[Roundcube](https://roundcube.net/) work well with IMAP using dbmail-imapd

plus Roundcube and most desktop software has integration with email filtering

via dbmail-sieved.



### Dependencies



* Database: Current versions of MySQL, PostgreSQL, Sqlite3 and Oracle

* Glib: (>= 2.16)

* GMime: (>= 3 (3.2))

* OpenSSL

* libmhash

* libzdb (http://www.tildeslash.com/libzdb/)

* libevent: (>= 2.1)

* Optional: libsieve (>= 2.2.1) (https://github.com/sodabrew/libsieve)

* Optional: jemalloc



### Installing



* Download DBMail package

* Install dependencies (some provided from your linux / BSD distribution and

  some (libzdb and/or libsieve) need to be compiled

* ./configure

* make 

* make install