iRedMail configures Postfix to use Dovecot as SASL authenticate server, so all
password schemes supported by Dovecot can be used in iRedMail. Please refer to
Dovecot wiki page
[`Password Schemes`](http://wiki2.dovecot.org/Authentication/PasswordSchemes) for more details.
Below password schemes are supported in iRedAdmin-Pro (which means you can add new mail user with either one):
* Plain text. e.g. `123456`
* MD5. (salted. e.g. `$1$GfHYI7OE$vlXqMZSyJOSPXAmbXHq250`
* PLAIN-MD5 (unsalted MD5). e.g. `0d2bf3c712402f428d48fed691850bfc`
* SSHA. e.g. `{SSHA}OuCrqL2yWwQIu8a9uvyOQ5V/ZKfL7LJD`
* SSHA512. e.g. `{SSHA512}FxgXDhBVYmTqoboW+ibyyzPv/wGG7y4VJtuHWrx+wfqrs/lIH2Qxn2eA0jygXtBhMvRi7GNFmL++6aAZ0kXpcy1fxag=`
__NOTE__: Dovecot claims it supports SSHA512, but I didn't get it work.
Please test it first if you choose SSHA512.
## Default password schemes used in iRedMail
* For MySQL and PostgreSQL backends: `MD5` (salted).
* For LDAP backend: `SSHA`.
## How to use different password hashes in iRedMail
### For MySQL and PostgreSQL backends
All mail users are stored in SQL table `vmail.mailbox`, user password is stored
in SQL column `mailbox.password`. For example:
<pre>
sql> UPDATE mailbox SET password='$1$GfHYI7OE$vlXqMZSyJOSPXAmbXHq250' WHERE username='xx@xx';
sql> UPDATE mailbox SET password='{SSHA}OuCrqL2yWwQIu8a9uvyOQ5V/ZKfL7LJD' WHERE username='xx@xx';
sql> UPDATE mailbox SET password='{SSHA512}FxgXDhBVYmTqoboW+ibyyzPv/wGG7y4VJtuHWrx+wfqrs/lIH2Qxn2eA0jygXtBhMvRi7GNFmL++6aAZ0kXpcy1fxag=' WHERE username='xx@xx';
</pre>
* To store PLAIN-MD5, you have to prepend `{PLAIN-MD5}` in your password hash:
<pre>
sql> UPDATE mailbox SET password='{PLAIN-MD5}0d2bf3c712402f428d48fed691850bfc' WHERE username='xx@xx';
</pre>
* To store plain password, you have to prepend `{PLAIN}`:
<pre>sql> UPDATE mailbox SET password='{PLAIN}123456' WHERE username='xx@xx';</pre>
### For LDAP backends
User password is stored in attribute `userPassword` of user object.
* To store plain password, SSHA, SSHA512 password hash, just store them in
