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May 15th, 2017
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  1. #default_process_limit = 100
  2. #default_client_limit = 1000
  3.  
  4. # Default VSZ (virtual memory size) limit for service processes. This is mainly
  5. # intended to catch and kill processes that leak memory before they eat up
  6. # everything.
  7. #default_vsz_limit = 256M
  8.  
  9. # Login user is internally used by login processes. This is the most untrusted
  10. # user in Dovecot system. It shouldn't have access to anything at all.
  11. #default_login_user = dovenull
  12.  
  13. # Internal user is used by unprivileged processes. It should be separate from
  14. # login user, so that login processes can't disturb other processes.
  15. #default_internal_user = dovecot
  16.  
  17. service imap-login {
  18. inet_listener imap {
  19. #port = 143
  20. }
  21. inet_listener imaps {
  22. #port = 993
  23. #ssl = yes
  24. }
  25.  
  26. # Number of connections to handle before starting a new process. Typically
  27. # the only useful values are 0 (unlimited) or 1. 1 is more secure, but 0
  28. # is faster. <doc/wiki/LoginProcess.txt>
  29. #service_count = 1
  30.  
  31. # Number of processes to always keep waiting for more connections.
  32. #process_min_avail = 0
  33.  
  34. # If you set service_count=0, you probably need to grow this.
  35. #vsz_limit = $default_vsz_limit
  36. }
  37.  
  38. service pop3-login {
  39. inet_listener pop3 {
  40. #port = 110
  41. }
  42. inet_listener pop3s {
  43. #port = 995
  44. #ssl = yes
  45. }
  46. }
  47.  
  48. service lmtp {
  49. unix_listener lmtp {
  50. #mode = 0666
  51. }
  52.  
  53. # Create inet listener only if you can't use the above UNIX socket
  54. #inet_listener lmtp {
  55. # Avoid making LMTP visible for the entire internet
  56. #address =
  57. #port =
  58. #}
  59. }
  60.  
  61. service imap {
  62. # Most of the memory goes to mmap()ing files. You may need to increase this
  63. # limit if you have huge mailboxes.
  64. #vsz_limit = $default_vsz_limit
  65.  
  66. # Max. number of IMAP processes (connections)
  67. #process_limit = 1024
  68. }
  69.  
  70. service pop3 {
  71. # Max. number of POP3 processes (connections)
  72. #process_limit = 1024
  73. }
  74.  
  75. service auth {
  76. # auth_socket_path points to this userdb socket by default. It's typically
  77. # used by dovecot-lda, doveadm, possibly imap process, etc. Users that have
  78. # full permissions to this socket are able to get a list of all usernames and
  79. # get the results of everyone's userdb lookups.
  80. #
  81. # The default 0666 mode allows anyone to connect to the socket, but the
  82. # userdb lookups will succeed only if the userdb returns an "uid" field that
  83. # matches the caller process's UID. Also if caller's uid or gid matches the
  84. # socket's uid or gid the lookup succeeds. Anything else causes a failure.
  85. #
  86. # To give the caller full permissions to lookup all users, set the mode to
  87. # something else than 0666 and Dovecot lets the kernel enforce the
  88. # permissions (e.g. 0777 allows everyone full permissions).
  89. unix_listener auth-userdb {
  90. #mode = 0666
  91. #user =
  92. #group =
  93. }
  94.  
  95. # Postfix smtp-auth
  96. unix_listener /var/spool/postfix/private/auth {
  97. mode = 0666
  98. user = postfix
  99. group = postfix
  100. }
  101.  
  102. # Auth process is run as this user.
  103. #user = $default_internal_user
  104. }
  105.  
  106. service auth-worker {
  107. # Auth worker process is run as root by default, so that it can access
  108. # /etc/shadow. If this isn't necessary, the user should be changed to
  109. # $default_internal_user.
  110. #user = root
  111. }
  112.  
  113. service dict {
  114. # If dict proxy is used, mail processes should have access to its socket.
  115. # For example: mode=0660, group=vmail and global mail_access_groups=vmail
  116. unix_listener dict {
  117. #mode = 0600
  118. #user =
  119. #group =
  120. }
  121. }
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