What is Userdb?
userdb lookup retrieves post-login information specific to this user. This may include: Mailbox location information. Quota limit. Overriding settings for the user (almost any setting can be overridden)
What is Dovecot authentication?
Dovecot supports defining multiple authentication databases, so that if the password doesn’t match in the first database, it checks the next one. This can be useful if you want to easily support having both local system users in /etc/passwd and virtual users.
What user does Dovecot run as?
root : Dovecot is started as root. dovenull : Dovecot uses an unprivileged dovenull user for untrusted login processes. dovecot : Dovecot uses an unprivileged dovecot user for internal processes. auth user : Password and user database lookups are done as auth user.
Where does Dovecot store passwords?
Password scheme means the format in which the password is stored in Password databases (passdb).
Where is Dovecot conf?
Configuring Dovecot The main configuration file is located at /etc/dovecot/dovecot. conf . There are three Dovecot configuration options we will cover: listen , protocols , and mail_location .
What is dovecot Linux?
Dovecot is a Mail Delivery Agent, written with security primarily in mind. It supports the major mailbox formats: mbox or Maildir. This section explains how to set it up as an IMAP or POP3 server.
What is dovecot pigeonhole?
In the literal sense, a pigeonhole is a a hole or recess inside a dovecot for pigeons to nest in. It is, however, also the name for one of a series of small, open compartments in a cabinet used for filing or sorting mail.
How does Dovecot work?
Dovecot developers primarily aim to produce a lightweight, fast and easy-to-set-up open-source email server. The primary purpose of Dovecot is to act as mail storage server. Mail is delivered to the server using some mail delivery agent (MDA) and stored for later access with an email client (mail user agent, or MUA).
How do I connect to Dovecot?
- Prerequisites. You need the following operating system and software to use Dovecot:
- Install Dovecot.
- Configure Dovecot.
- Configure the authentication process file.
- Configure the mail location.
- Configure Postfix SMTP authentication.
- Configure POP3.
- Create a mailbox.
How do I access Dovecot?
To configure Dovecot, edit the file /etc/dovecot/dovecot. conf and its included config files in /etc/dovecot/conf. d/ . By default all installed protocols will be enabled via an include directive in /etc/dovecot/dovecot.
What is the use of Dovecot user?
dovecot user is used internally for unprivileged Dovecot processes. It should belong to its own private dovecot group. Mail files are not accessed as dovecot user, so you shouldn’t give it access to mails.
How do I get the GID and UID of a dovecot user?
For system user setups you generally don’t have to worry about UIDs or GIDs, they are returned by the userdb passwd lookup. Virtual users where all Dovecot users run under a single system user. Typically you’d set this with mail_uid setting (e.g. mail_uid=vmail ).
What is the difference between dovenull and dovecot?
dovenull: Dovecot uses an unprivileged dovenull user for untrusted login processes. dovecot: Dovecot uses an unprivileged dovecot user for internal processes. auth user: Password and user database lookups are done as auth user. mail user (s): Mails are accessed using yet another user. The mail user should not be dovecot user.
What types of authentication lookups does userdb look for?
Dovecot splits all authentication lookups into two categories: userdb lookup retrieves post-login information specific to this user. This may include: Overriding settings for the user (almost any setting can be overridden)