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##
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## Authentication processes
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##
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# Disable LOGIN command and all other plaintext authentications unless
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# SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
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# matches the local IP (ie. you're connecting from the same computer), the
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# connection is considered secure and plaintext authentication is allowed.
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# See also ssl=required setting.
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disable_plaintext_auth = yes
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# Authentication cache size (e.g. 10M). 0 means it's disabled. Note that
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# bsdauth, PAM and vpopmail require cache_key to be set for caching to be used.
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#auth_cache_size = 0
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# Time to live for cached data. After TTL expires the cached record is no
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# longer used, *except* if the main database lookup returns internal failure.
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# We also try to handle password changes automatically: If user's previous
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# authentication was successful, but this one wasn't, the cache isn't used.
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# For now this works only with plaintext authentication.
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#auth_cache_ttl = 1 hour
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# TTL for negative hits (user not found, password mismatch).
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# 0 disables caching them completely.
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#auth_cache_negative_ttl = 1 hour
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# Space separated list of realms for SASL authentication mechanisms that need
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# them. You can leave it empty if you don't want to support multiple realms.
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# Many clients simply use the first one listed here, so keep the default realm
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# first.
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#auth_realms =
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# Default realm/domain to use if none was specified. This is used for both
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# SASL realms and appending @domain to username in plaintext logins.
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#auth_default_realm =
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# List of allowed characters in username. If the user-given username contains
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# a character not listed in here, the login automatically fails. This is just
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# an extra check to make sure user can't exploit any potential quote escaping
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# vulnerabilities with SQL/LDAP databases. If you want to allow all characters,
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# set this value to empty.
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#auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
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# Username character translations before it's looked up from databases. The
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# value contains series of from -> to characters. For example "#@/@" means
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# that '#' and '/' characters are translated to '@'.
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#auth_username_translation =
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# Username formatting before it's looked up from databases. You can use
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# the standard variables here, eg. %Lu would lowercase the username, %n would
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# drop away the domain if it was given, or "%n-AT-%d" would change the '@' into
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# "-AT-". This translation is done after auth_username_translation changes.
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#auth_username_format = %Lu
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auth_username_format = %u
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# If you want to allow master users to log in by specifying the master
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# username within the normal username string (ie. not using SASL mechanism's
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# support for it), you can specify the separator character here. The format
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# is then <username><separator><master username>. UW-IMAP uses "*" as the
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# separator, so that could be a good choice.
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#auth_master_user_separator =
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# Username to use for users logging in with ANONYMOUS SASL mechanism
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#auth_anonymous_username = anonymous
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# Maximum number of dovecot-auth worker processes. They're used to execute
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# blocking passdb and userdb queries (eg. MySQL and PAM). They're
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# automatically created and destroyed as needed.
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#auth_worker_max_count = 30
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# Host name to use in GSSAPI principal names. The default is to use the
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# name returned by gethostname(). Use "$ALL" (with quotes) to allow all keytab
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# entries.
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#auth_gssapi_hostname =
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# Kerberos keytab to use for the GSSAPI mechanism. Will use the system
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# default (usually /etc/krb5.keytab) if not specified. You may need to change
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# the auth service to run as root to be able to read this file.
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#auth_krb5_keytab =
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# Do NTLM and GSS-SPNEGO authentication using Samba's winbind daemon and
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# ntlm_auth helper. <doc/wiki/Authentication/Mechanisms/Winbind.txt>
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#auth_use_winbind = no
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# Path for Samba's ntlm_auth helper binary.
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#auth_winbind_helper_path = /usr/bin/ntlm_auth
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# Time to delay before replying to failed authentications.
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#auth_failure_delay = 2 secs
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# Require a valid SSL client certificate or the authentication fails.
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#auth_ssl_require_client_cert = no
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# Take the username from client's SSL certificate, using
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# X509_NAME_get_text_by_NID() which returns the subject's DN's
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# CommonName.
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#auth_ssl_username_from_cert = no
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# Space separated list of wanted authentication mechanisms:
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# plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi otp skey
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# gss-spnego
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# NOTE: See also disable_plaintext_auth setting.
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auth_mechanisms = plain login
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##
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## Password and user databases
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##
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#
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# Password database is used to verify user's password (and nothing more).
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# You can have multiple passdbs and userdbs. This is useful if you want to
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# allow both system users (/etc/passwd) and virtual users to login without
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# duplicating the system users into virtual database.
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#
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# <doc/wiki/PasswordDatabase.txt>
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#
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# User database specifies where mails are located and what user/group IDs
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# own them. For single-UID configuration use "static" userdb.
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#
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# <doc/wiki/UserDatabase.txt>
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#!include auth-deny.conf.ext
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#!include auth-master.conf.ext
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!include auth-system.conf.ext
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!include auth-sql.conf.ext
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#!include auth-ldap.conf.ext
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#!include auth-passwdfile.conf.ext
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#!include auth-checkpassword.conf.ext
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#!include auth-vpopmail.conf.ext
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#!include auth-static.conf.ext
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