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  1. ##
  2. ## Authentication processes
  3. ##
  4.  
  5. # Disable LOGIN command and all other plaintext authentications unless
  6. # SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
  7. # matches the local IP (ie. you're connecting from the same computer), the
  8. # connection is considered secure and plaintext authentication is allowed.
  9. # See also ssl=required setting.
  10. #disable_plaintext_auth = yes
  11.  
  12. # Authentication cache size (e.g. 10M). 0 means it's disabled. Note that
  13. # bsdauth, PAM and vpopmail require cache_key to be set for caching to be used.
  14. #auth_cache_size = 0
  15. # Time to live for cached data. After TTL expires the cached record is no
  16. # longer used, *except* if the main database lookup returns internal failure.
  17. # We also try to handle password changes automatically: If user's previous
  18. # authentication was successful, but this one wasn't, the cache isn't used.
  19. # For now this works only with plaintext authentication.
  20. #auth_cache_ttl = 1 hour
  21. # TTL for negative hits (user not found, password mismatch).
  22. # 0 disables caching them completely.
  23. #auth_cache_negative_ttl = 1 hour
  24.  
  25. # Space separated list of realms for SASL authentication mechanisms that need
  26. # them. You can leave it empty if you don't want to support multiple realms.
  27. # Many clients simply use the first one listed here, so keep the default realm
  28. # first.
  29. #auth_realms =
  30.  
  31. # Default realm/domain to use if none was specified. This is used for both
  32. # SASL realms and appending @domain to username in plaintext logins.
  33. #auth_default_realm =
  34.  
  35. # List of allowed characters in username. If the user-given username contains
  36. # a character not listed in here, the login automatically fails. This is just
  37. # an extra check to make sure user can't exploit any potential quote escaping
  38. # vulnerabilities with SQL/LDAP databases. If you want to allow all characters,
  39. # set this value to empty.
  40. #auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
  41.  
  42. # Username character translations before it's looked up from databases. The
  43. # value contains series of from -> to characters. For example "#@/@" means
  44. # that '#' and '/' characters are translated to '@'.
  45. #auth_username_translation =
  46.  
  47. # Username formatting before it's looked up from databases. You can use
  48. # the standard variables here, eg. %Lu would lowercase the username, %n would
  49. # drop away the domain if it was given, or "%n-AT-%d" would change the '@' into
  50. # "-AT-". This translation is done after auth_username_translation changes.
  51. #auth_username_format = %Lu
  52.  
  53. # If you want to allow master users to log in by specifying the master
  54. # username within the normal username string (ie. not using SASL mechanism's
  55. # support for it), you can specify the separator character here. The format
  56. # is then <username><separator><master username>. UW-IMAP uses "*" as the
  57. # separator, so that could be a good choice.
  58. #auth_master_user_separator =
  59.  
  60. # Username to use for users logging in with ANONYMOUS SASL mechanism
  61. #auth_anonymous_username = anonymous
  62.  
  63. # Maximum number of dovecot-auth worker processes. They're used to execute
  64. # blocking passdb and userdb queries (eg. MySQL and PAM). They're
  65. # automatically created and destroyed as needed.
  66. #auth_worker_max_count = 30
  67.  
  68. # Host name to use in GSSAPI principal names. The default is to use the
  69. # name returned by gethostname(). Use "$ALL" (with quotes) to allow all keytab
  70. # entries.
  71. #auth_gssapi_hostname =
  72.  
  73. # Kerberos keytab to use for the GSSAPI mechanism. Will use the system
  74. # default (usually /etc/krb5.keytab) if not specified. You may need to change
  75. # the auth service to run as root to be able to read this file.
  76. #auth_krb5_keytab =
  77.  
  78. # Do NTLM and GSS-SPNEGO authentication using Samba's winbind daemon and
  79. # ntlm_auth helper. <doc/wiki/Authentication/Mechanisms/Winbind.txt>
  80. #auth_use_winbind = no
  81.  
  82. # Path for Samba's ntlm_auth helper binary.
  83. #auth_winbind_helper_path = /usr/bin/ntlm_auth
  84.  
  85. # Time to delay before replying to failed authentications.
  86. #auth_failure_delay = 2 secs
  87.  
  88. # Require a valid SSL client certificate or the authentication fails.
  89. #auth_ssl_require_client_cert = no
  90.  
  91. # Take the username from client's SSL certificate, using
  92. # X509_NAME_get_text_by_NID() which returns the subject's DN's
  93. # CommonName.
  94. #auth_ssl_username_from_cert = no
  95.  
  96. # Space separated list of wanted authentication mechanisms:
  97. # plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi otp skey
  98. # gss-spnego
  99. # NOTE: See also disable_plaintext_auth setting.
  100. auth_mechanisms = plain login
  101.  
  102. ##
  103. ## Password and user databases
  104. ##
  105.  
  106. #
  107. # Password database is used to verify user's password (and nothing more).
  108. # You can have multiple passdbs and userdbs. This is useful if you want to
  109. # allow both system users (/etc/passwd) and virtual users to login without
  110. # duplicating the system users into virtual database.
  111. #
  112. # <doc/wiki/PasswordDatabase.txt>
  113. #
  114. # User database specifies where mails are located and what user/group IDs
  115. # own them. For single-UID configuration use "static" userdb.
  116. #
  117. # <doc/wiki/UserDatabase.txt>
  118.  
  119. #!include auth-deny.conf.ext
  120. #!include auth-master.conf.ext
  121.  
  122. !include auth-system.conf.ext
  123. #!include auth-sql.conf.ext
  124. #!include auth-ldap.conf.ext
  125. #!include auth-passwdfile.conf.ext
  126. #!include auth-checkpassword.conf.ext
  127. #!include auth-vpopmail.conf.ext
  128. #!include auth-static.conf.ext
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