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docker-mailserver/docs/content/config/user-management/accounts.md
youtous 19a86565d7 Updated Configure Accounts (markdown)
2020-05-01 23:53:37 +02:00

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Users (email accounts) are managed in config/postfix-accounts.cf. Just add the full email address and its encrypted password separated by a pipe.

Example:

user1@domain.tld|{SHA512-CRYPT}$6$2YpW1nYtPBs2yLYS$z.5PGH1OEzsHHNhl3gJrc3D.YMZkvKw/vp.r5WIiwya6z7P/CQ9GDEJDr2G2V0cAfjDFeAQPUoopsuWPXLk3u1
user2@otherdomain.tld|{SHA512-CRYPT}$6$2YpW1nYtPBs2yLYS$z.5PGH1OEzsHHNhl3gJrc3D.YMZkvKw/vp.r5WIiwya6z7P/CQ9GDEJDr2G2V0cAfjDFeAQPUoopsuWPXLk3u1

In the previous example, we added 2 mail accounts for 2 different domains. This is will automagically configure the mail-server as multi-domains.

To generate a new mail account entry in your configuration, you could run for example the following:

docker run --rm \
  -e MAIL_USER=user1@domain.tld \
  -e MAIL_PASS=mypassword \
  -ti tvial/docker-mailserver:latest \
  /bin/sh -c 'echo "$MAIL_USER|$(doveadm pw -s SHA512-CRYPT -u $MAIL_USER -p $MAIL_PASS)"' >> config/postfix-accounts.cf

You will be asked for a password. Just copy all the output string in the file config/postfix-accounts.cf.

The doveadm pw command let you choose between several encryption schemes for the password. Use doveadm pw -l to get a list of the currently supported encryption schemes.

Note: changes made with this script require a restart of the container. See #552

Mailbox quota

On top of the default quota (POSTFIX_MAILBOX_SIZE_LIMIT), you can define specific quotas per mailbox. Quota implementation relies on dovecot quota which requires dovecot to be enabled. Consequently, quota directives are disabled when SMTP_ONLY=1 or when ENABLE_LDAP=1 or when explicitly disabled with ENABLE_QUOTAS=0.

A warning message will be sent to the user when his mailbox is reaching quota limit. Have a look at 90-quota.cf for further details.

Commands

exec in the container

  • setquota <user@domain.tld> [<quota>]: define the quota of a mailbox (quota format e.g. 302M (B (byte), k (kilobyte), M (megabyte), G (gigabyte) or T (terabyte)))
  • delquota <user@domain.tld>: delete the quota of a mailbox
  • doveadm quota get -u <user@domain>: display the quota and the statistics of a mailbox

dovecot-quotas.cf

This file is a key-value database where quotas are stored.

dovecot-quotas.cf

user@domain.tld:50M
john@other-domain.tld:1G

Notes

  • imap-quota is enabled and allow clients to query their mailbox usage.
  • When the mailbox is deleted, the quota directive is deleted as well.
  • LDAP ? Dovecot quotas supports LDAP but it's not implemented (PR are welcome!).