From iRedMail

Current revision as of 03:00, 9 January 2012

General

Fix incorrect per-user sieve_dir setting in Dovecot

Note: This fix is applicable to Dovecot-1.x, you can check Dovecot version with command "dovecot -n".

In /etc/dovecot.conf or /etc/dovecot/dovecot.conf, remove the last slash (/) in setting sieve_dir = like below:

# Original setting:
#sieve_dir = /var/vmail/sieve/%Ld/%Ln/

# Change to:
sieve_dir = /var/vmail/sieve/%Ld/%Ln              # <-- Remove the last slash.

Add INDEXes for Amavisd database

$ mysql -uroot -p
mysql> USE amavisd;
mysql> ALTER TABLE maddr ADD INDEX maddr_idx_email (email);
mysql> ALTER TABLE maddr ADD INDEX maddr_idx_domain (domain);
mysql> ALTER TABLE msgs ADD INDEX msgs_idx_content (content);
mysql> ALTER TABLE msgs ADD INDEX msgs_idx_content_time_num (content, time_num);
mysql> ALTER TABLE msgs ADD INDEX msgs_idx_mail_id (mail_id);
mysql> ALTER TABLE quarantine ADD INDEX quar_idx_mail_id (mail_id);

[Debian and Ubuntu special] Assign Apache daemon user to group "adm"

Note: This fix is applicable to only Debian and Ubuntu.

Assign Apache daemon user to group "adm" to avoid Awstats cron job issue.

# usermod -g adm www-data

OpenLDAP backend special

Fix incorrect calculation of mailbox quota

There's a bug in iRedMail-0.7.3 and all earlier versions: Mailbox quota gets calculated per user and per user alias account, so both email addresses get their own mailbox quota usage. Here's the solution to fix it.

• Open /etc/dovecot-ldap.conf (RHEL/CentOS/Scientific Linux) or /etc/dovecot/dovecot-ldap.conf (Debian/Ubuntu/openSUSE) or /usr/local/etc/dovecot-ldap.conf (FreeBSD), prepend mail=user, in both user_attrs = and pass_attrs = like below:

# Original settings:
#pass_attrs = userPassword=password
#user_attrs = homeDirectory=home,[...OMIT OTHER SETTINGS HERE...]

# Changed:
pass_attrs = mail=user,userPassword=password
user_attrs = mail=user,homeDirectory=home,[...OMIT OTHER SETTINGS HERE...]

MySQL backend special

Store realtime mailbox quota usage in seperate SQL table

Summary:

In iRedMail-0.7.3 and some earlier versions, Dovecot stores realtime mailbox quota usage in MySQL database in two columns: mailbox.bytes, mailbox.messages, if they have invalid values (e.g. empty value, non-integer value), Dovecot will update them with two SQL commands:

1. First one: delete record. (DELETE FROM mailbox WHERE username='xxx@yyy.com')
2. Second: create a new record with current, correct quota info. (INSERT INTO mailbox (username, bytes, messages) VALUES ('xxx@yyy.com', xx, xx))

First one will delete iRedMail mail user, that's the problem. User OviVan reports this issue after migrated user mailboxes to iRedMail-0.7.3.

So we have to store realtime mailbox quota usage in a separate MySQL table to avoid similar issues.

Below are steps to store realtime mailbox quota usage in a separate SQL table:

• Create new SQL table vmail.used_quota to store mailbox quota:

# mysql -uroot -p
mysql> USE vmail;
mysql> CREATE TABLE IF NOT EXISTS `used_quota` (
    `username` VARCHAR(255) NOT NULL,
    `bytes` BIGINT NOT NULL DEFAULT 0,
    `messages` BIGINT NOT NULL DEFAULT 0,
    PRIMARY KEY (`username`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

• Replace table = mailbox with table = used_quota in below config file, so that Dovecot will store mailbox quota in new SQL table.
  • On RHEL/CentOS/Scientific Linux 5.x, please update /etc/dovecot-used-quota.conf, on 6.x, please update /etc/dovecot/used-quota.conf.
  • On Debian/Ubuntu, please update /etc/dovecot/dovecot-used-quota.conf.
  • On openSUSE, please update /etc/dovecot/dovecot-used-quota.conf.
  • On FreeBSD, please update /usr/local/etc/dovecot-used-quota.conf.

• Restarting Dovecot service is required.