fripost-ansible/roles/IMAP-proxy/templates, branch master

Remove the IMAP caching proxy.

2016-05-28T12:17:19+00:00

Dovecot imapc requires two authentication rounds to the IMAP backend for
each connection.  It seems suboptimal that Roundcube keeps connecting to
the IMAP server for each new connection, but benchmarks shows little
advantage in caching the IMAP sessions with imapproxy:

  http://www.dovecot.org/list/dovecot/2012-February/133544.html

Dovecot imapc: use the version from jessie-backports.

2016-05-22T23:58:48+00:00

Since many bug have been fixed since 2.2.13, and we really want
passthrough search on the caching proxy.

Dovecot imapc: don't hardcode the master IMAP server's IP.

2016-05-22T23:07:18+00:00

Assume a DNS entry for each role.

2015-06-07T00:51:48+00:00

E.g., ldap.fripost.org, ntp.fripost.org, etc.  (Ideally the DNS zone
would be provisioned by ansible, too.)  It's a bit unclear how to index
the subdomains (mx{1,2,3}, etc), though.

Use a local IMAP caching proxy under the webmail.

2015-06-07T00:51:29+00:00

(Unless the webmail is itself a full IMAP server.) It replaces
RoundCube's own IMAP and message caches.

Dovecot's IMAPC storage backend is not very documented, but provides
smart IMAP proxying. References include:

http://dovecot.org/pipermail/dovecot/2011-January/056975.html
http://wiki2.dovecot.org/HowTo/ImapcProxy
http://wiki2.dovecot.org/Migration/Dsync