2018-07-28 06:30:44 -05:00
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# Change per-user mailbox format (e.g. maildir, mdbox)
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2018-07-28 06:02:19 -05:00
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iRedMail uses `maildir` mailbox format by default, it's easy to migrate and
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maintain, but if mailbox size is growing, the performance will be getting
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slower due to too much disk I/O. Dovecot's own mailbox format `mdbox` has very
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good performance for large mailbox due to reduced disk I/O.
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2018-07-28 06:18:17 -05:00
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You may want to switch to other mailbox format for some reason.
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To help you switch easily, iRedMail-0.9.9 introduces 2 new
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2018-07-28 06:02:19 -05:00
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SQL columns (for SQL backends) and LDAP attributes (for LDAP backends) to help
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you switch per-user mailbox format easily. All
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2018-07-28 06:18:17 -05:00
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[mailbox formats supported by Dovecot]https://wiki2.dovecot.org/MailboxFormat)
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2018-07-28 06:02:19 -05:00
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is supported in iRedMail.
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!!! attention
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2018-07-28 06:21:35 -05:00
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* If you're running an iRedMail release earlier than iRedMail-0.9.9, you can
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upgrade it by following [iRedMail upgrade tutorials](./iredmail.releases.html).
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* iRedAdmin-Pro RESTful API interface supports changing mailbox format too.
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Check its [API document](./iredadmin-pro.restful.api.html) (expand all
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parameters and search 'mailboxformat' or `mailboxFormat`).
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2018-07-28 06:02:19 -05:00
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!!! warning
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- Changing mailbox format does not migrate existing mailbox for you. You
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have to migrate it __BEFORE__ switching to new mailbox format, then
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update SQL/LDAP data to use new mailbox format right after migrated the
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mailbox.
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- New mailbox format will be used by Dovecot immediately after SQL/LDAP change.
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## SQL backends
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You can switch to different mailbox format with SQL commands below. We use
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MySQL for example here.
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```
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USE vmail;
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UPDATE mailbox SET mailboxformat='mdbox', mailboxfolder='mdbox' where username="user@your-domain.com";
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```
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* Value of `mailboxfolder` can be any folder name supported by Linux/BSD file
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system, but value of `mailboxformat` must be one of the formats supported by
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Dovecot, e.g. maildir, sdbox, mdbox.
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* Value of `mailboxfolder` can not be same as previously used one, otherwise
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old mailbox will be messed up when Dovecot delivers new email.
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## LDAP backends
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You need some LDAP management tool like [phpLDAPadmin](http://phpldapadmin.sourceforge.net/),
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[Apache Directory Studio](https://directory.apache.org/studio/), or command
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line tool `ldapvi` (you can install it with `yum` or `apt-get` command directly)
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to update mail user's LDIF data.
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```
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mailboxFormat: mdbox
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mailboxFolder: mdbox
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```
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* Value of `mailboxFolder` can be any folder name supported by Linux/BSD file
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system, but value of `mailboxFormat` must be one of the formats supported by
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Dovecot, e.g. maildir, sdbox, mdbox.
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* Value of `mailboxfolder` can not be same as previously used one, otherwise
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old mailbox will be messed up when Dovecot delivers new email.
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* With iRedMail-0.9.9, if attribute `mailboxFormat` and `mailboxFolder` don't
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present in user LDAP object, Dovecot is configured to use `maildir` as
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default mailbox format and `Maildir` (case-sensitive) as folder name.
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