On Thu, 2012-12-06 at 14:46 +0100, Urban Loesch wrote:

Hi,

in the release notes of 2.1.9 I read that dovecot supports memcache and redis backends for userdb/passdb authentication. This is very interesting for me and should reduce queries and database load of our mysql servers.

My idea is to use memcache or redis in our IMAP/POP3 proxies in front of our backend servers. So I would like to try out if it's possible to store proxy information of our backends. For example the backend ip adress.

But in the wiki I found only a few configuration settings for redis backend. http://master.wiki2.dovecot.org/AuthDatabase/Dict

That's all the Redis/memcached-specific configuration. Just make them return all the extra fields you want in the JSON values.

You could for example put a passdb/userdb dict first and sql next. So requests are first tried from the dict and if that fails then from sql.

Also the mentioned example config file "dovecot-dict-auth.conf.ext" with full list of configuration options does not exits in the source of 2.1.11.

Looks like it was missing from the Makefile. Will be in next version and you can also see it from:

http://hg.dovecot.org/dovecot-2.1/file/tip/doc/example-config/dovecot-dict-a...