What are the advantages?

Scalability

Dbmail is as scalable as the database system used for storage.

Manageability

Dbmail can be managed by updating the relational database or directory service - without shell access.

Speed

Dbmail uses very efficient, database specific queries for retrieving mail information.

Security

Dbmail doesn't require filesystem access. It's as secure as the database and directory server used.

Flexibility.

Changes in a Dbmail system (adding of users, changing passwords etc.) are effective immediately. Users can be stored in the database, or managed separately in an LDAP server such as OpenLDAP or Active Directory.

older versions

Recent changes

master branch

Disconnect IMAP clients if only few free FDs left (#37)

2016-06-02

Disconnect IMAP clients if only few free FDs left (#37)

After network connection to DB server goes down the processing of IMAP session
stalls: DB connection pool becomes exhausted as active connections do not
close till TCP timeout kicks in (true at least for Oracle). While DBMail still
accepts incoming connections it quickly reaches the RLIMIT_NOFILE and becomes
unresponsive. Send BYE response if the number of opened FDs reaches the
RLIMIT_NOFILE value.

simplify log_query_time duration logic

2016-03-05

simplify log_query_time duration logic

improve crypt authentication

2016-02-10

improve crypt authentication

also don't segfault when spasswd is empty

3.2 stable branch

prevent assertion in p_string_erase

2016-01-10

prevent assertion in p_string_erase

login_disabled option before starttls for pop3

2015-02-18

login_disabled option before starttls for pop3

bump 3.2.3

2015-01-25

bump 3.2.3

Blog

What's up with max_db_connections?

2013-12-05

Migrating from MySQL to PostgreSQL

2012-09-13

Pruning the dbmail_headervalue table

2010-02-13

Available

DBMail is primarily developed and tested on the GNU Linux and FreeBSD platforms. Users have also reported successfull deployments on OpenSolaris, NetBSD and OSX.

DBMail is released under the GNU Public Licence (version 2).