I have installed IspConfig 3 on Ubuntu 16.04.1 VPS and chosen Mdbox as Maildir Format. My question is how can I add 'alternate storage' parameter that describes here http://wiki2.dovecot.org/MailboxFormat/dbox#Alternate_storage, so I can move message stores older than x days to alternate storage (I am planing to mount Amazon S3 using s3fs as Alternate store) executing altmove command through a cron job. I tried to insert '/var/vmail/[domain]/[localpart]:alt=/var/vmail-altstore/[domain]/[localpart]' it in MailDir path, but it says 'Invalid maildir path'. Is there any other way I can do it?
... In fact I have achieved it by adding "mail_location = mdbox:/var/vmail/%d/%n/mdbox:ALT=/var/vmail-altstore/%d/%n/mdbox" to dovecot.conf and modifying dovecot-sql.conf line# 124 and 125 as password_query = SELECT email as user, password, maildir as userdb_home, uid as userdb_uid, gid as userdb_gid, CONCAT('*:storage=', quota, 'B') AS userdb_quota_rule, CONCAT(maildir, '/.sieve') as userdb_sieve FROM mail_user WHERE (login = '%u' OR email = '%u') AND `disable%Ls` = 'n' AND server_id = '1' user_query = SELECT email as user, maildir as home, uid, gid, CONCAT('*:storage=', quota, 'B') AS quota_rule, CONCAT(maildir, '/.sieve') as sieve FROM mail_user WHERE (login = '%u' OR email = '%u') AND `disable%Ls` = 'n' AND server_id = '1' Although it works, it is not straight forward. Things may go wrong when I update ISPConfig without taking manual backups of modified files (or do you suggest any safer way?). It would be nice and great to have this feature in ISPConfig.
You can store a copy of the dovecot config file template in /usr/local/ispconfig/server/conf-custom/install/ where you include your changes to make them update safe. The template can be found in the install/tpl/ folder of the ispconfig tar.gz file.
