thr3ads.net - dovecot - huge increase in storage activity afther dovecot upgrade [Nov 2018]

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Adrian M

2018-Nov-14 10:00 UTC

huge increase in storage activity afther dovecot upgrade

Thank you !
I was little concerned that the following settings are not in line with the
new version:

mail_nfs_index = yes
mail_nfs_storage = yes
mail_fsync = always
mailbox_list_index = yes
maildir_stat_dirs = yes
mmap_disable = yes


On Wed, Nov 14, 2018 at 10:19 AM Aki Tuomi <aki.tuomi at open-xchange.com>
wrote:
> It should eventually wind down once all the problems are fixed. Of course
> if it does not happen, you can always run force-resync for the problem
> users.
>
> Aki
> On 14.11.2018 10.08, Adrian M wrote:
>
> Hi,
> we upgraded our servers from version 2.2.13 to 2.2.27. After the upgrade
> we notice a 10x increase in traffic with the nfs storage an errors like
> this in the logfile:
>
> Nov 12 09:48:16 mail dovecot: imap(...): Error: Corrupted index cache file
> /.../dovecot.index.cache: invalid record size
> Nov 12 09:48:16 mail dovecot: imap(...): Error:
> unlink(/.../dovecot.index.cache) failed: No such file or directory (in
> mail-cache.c:29)
> Nov 12 09:48:16 mail dovecot: imap(...): Error: Corrupted index cache file
> /.../dovecot.index.cache: invalid record size
> Nov 12 09:48:16 mail dovecot: imap(...): Error: Broken file
> /.../dovecot-uidlist line 8: Invalid data:
>
> Is this normal ?
> Will the activity wind down ?
> Can we do something, like deleting the old dovecot.index* or
> dovecot-uidlist files from maildirs, or doing an doveadm force-refresh for
> all inboxes ?
>
> Thank you !
>
> Here's my configuration:
>
> # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf
> # Pigeonhole version 0.4.16 (fed8554)
> # OS: Linux 4.9.0-8-amd64 x86_64 Debian 9.6 nfs
> auth_failure_delay = 15 secs
> auth_mechanisms = plain login
> auth_verbose = yes
> auth_worker_max_count = 256
> default_client_limit = 40000
> default_process_limit = 512
> dict {
>   lastlogin = mysql:/etc/dovecot/mysql/dovecot-dict-lastlogin.conf
>   quotadict = mysql:/etc/dovecot/mysql/dovecot-dict-quota.conf
> }
> disable_plaintext_auth = no
> first_valid_uid = 100
> log_timestamp = "%Y-%m-%d %H:%M:%S "
> login_log_format_elements = user=<%u> method=%m rip=%r lip=%l pid=%p
%c
> mail_fsync = always
> mail_location = maildir:*/home/virtual/*%d/%u
> mail_max_userip_connections = 16
> mail_nfs_index = yes
> mail_nfs_storage = yes
> mail_plugins = zlib quota mail_log notify
> mail_privileged_group = mail
> mailbox_list_index = yes
> maildir_stat_dirs = yes
> managesieve_notify_capability = mailto
> managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy
include variables body enotify environment mailbox date ihave
> mmap_disable = yes
> namespace inbox {
>   inbox = yes
>   location >   mailbox Drafts {
>     special_use = \Drafts
>   }
>   mailbox Junk {
>     special_use = \Junk
>   }
>   mailbox Sent {
>     auto = subscribe
>     special_use = \Sent
>   }
>   mailbox "Sent Messages" {
>     special_use = \Sent
>   }
>   mailbox Spam {
>     auto = subscribe
>     special_use = \Junk
>   }
>   mailbox Trash {
>     auto = subscribe
>     special_use = \Trash
>   }
>   mailbox virtual/All {
>     special_use = \All
>   }
>   prefix > }
> passdb {
>   args = /etc/dovecot/mysql/dovecot-sql.conf
>   driver = sql
> }
> plugin {
>   last_login_dict = proxy::lastlogin
>   last_login_key = last-login/%u
>   mail_log_events = delete undelete expunge copy mailbox_delete
mailbox_rename
>   mail_log_fields = uid box msgid size
>   quota = dict:user::proxy::quotadict
>   quota_rule2 = Trash:ignore
>   quota_rule3 = Spam:ignore
>   quota_status_nouser = DUNNO
>   quota_status_overquota = 552 5.2.2 The email account that you tried to
reach is over quota
>   quota_status_success = DUNNO
>   quota_warning = storage=95%% quota-warning 95 %u
>   quota_warning2 = storage=80%% quota-warning 80 %u
>   sieve = ~/.dovecot.sieve
>   sieve_before = /etc/dovecot/sieve/default.sieve
>   sieve_dir = ~/sieve
>   stats_refresh = 30 secs
>   stats_track_cmds = yes
>   trash = /etc/dovecot/dovecot-trash.conf
>   zlib_save = gz
>   zlib_save_level = 6
> }
> protocols = imap sieve pop3 lmtp
> service anvil {
>   client_limit = 20000
>   unix_listener anvil-auth-penalty {
>     mode = 00
>   }
> }
> service auth {
>   client_limit = 20000
>   unix_listener /var/spool/postfix/private/auth {
>     group = postfix
>     mode = 0660
>     user = postfix
>   }
>   unix_listener auth-master {
>     group = mail
>     mode = 0660
>     user = vmail
>   }
>   user = root
>   vsz_limit = 1 G
> }
> service dict {
>   unix_listener dict {
>     mode = 0660
>     user = vmail
>   }
> }
> service imap-login {
>   client_limit = 4096
>   executable = /usr/lib/dovecot/imap-login
>   inet_listener imap {
>     address = *
>     port = 143
>   }
>   inet_listener imaps {
>     address = *
>     port = 993
>   }
>   process_limit = 4096
>   process_min_avail = 24
>   service_count = 100
> }
> service imap {
>   executable = /usr/lib/dovecot/imap
>   process_limit = 4096
>   process_min_avail = 24
>   vsz_limit = 1 G
> }
> service lmtp {
>   process_min_avail = 24
>   unix_listener /var/spool/postfix/private/dovecot-lmtp {
>     group = postfix
>     mode = 0600
>     user = postfix
>   }
>   vsz_limit = 1 G
> }
> service managesieve-login {
>   client_limit = 4096
>   inet_listener sieve {
>     port = 4190
>   }
>   process_limit = 4096
>   process_min_avail = 24
>   service_count = 1
> }
> service managesieve {
>   process_limit = 4096
>   vsz_limit = 1 G
> }
> service pop3-login {
>   client_limit = 4096
>   executable = /usr/lib/dovecot/pop3-login
>   inet_listener pop3 {
>     address = *
>     port = 0
>   }
>   inet_listener pop3s {
>     address = *
>     port = 995
>   }
>   process_limit = 4096
>   process_min_avail = 24
>   service_count = 100
> }
> service pop3 {
>   executable = /usr/lib/dovecot/pop3
>   process_limit = 4096
>   process_min_avail = 24
>   vsz_limit = 1 G
> }
> service quota-status {
>   client_limit = 4096
>   executable = /usr/lib/dovecot/quota-status -p postfix
>   process_min_avail = 24
>   unix_listener /var/spool/postfix/private/quota-status {
>     group = postfix
>     mode = 0660
>     user = postfix
>   }
> }
> service quota-warning {
>   executable = script /usr/local/bin/quota-warning.sh
>   unix_listener quota-warning {
>     mode = 0660
>     user = vmail
>   }
>   user = vmail
> }
>
> userdb {
>   args = /etc/dovecot/mysql/dovecot-sql.conf
>   driver = sql
> }
> protocol imap {
>   imap_idle_notify_interval = 4 mins
>   imap_max_line_length = 64 k
>   mail_max_userip_connections = 16
>   mail_plugins = zlib quota mail_log notify trash imap_quota
> }
> protocol pop3 {
>   mail_max_userip_connections = 16
>   mail_plugins = zlib quota mail_log notify
>   pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
>   pop3_fast_size_lookups = yes
>   pop3_no_flag_updates = yes
>   pop3_uidl_format = %08Xu%08Xv
> }
> protocol lda {
>   auth_socket_path = /var/run/dovecot/auth-master
>   mail_plugins = zlib quota mail_log notify sieve
>   sendmail_path = /usr/lib/sendmail
>   syslog_facility = mail
> }
> protocol sieve {
>   mail_max_userip_connections = 16
>   managesieve_max_compile_errors = 5
> }
> protocol lmtp {
>   mail_plugins = zlib quota mail_log notify sieve
>   syslog_facility = mail
> }
>
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Aki Tuomi

2018-Nov-14 10:18 UTC

head link

huge increase in storage activity afther dovecot upgrade

You should review https://wiki2.dovecot.org/NFS to see that the settings
make sense.

Aki

On 14.11.2018 12.00, Adrian M wrote:> Thank you !
> I was little concerned that the following settings are not in line
> with the new version:
>
> mail_nfs_index = yes
> mail_nfs_storage = yes
> mail_fsync = always
> mailbox_list_index = yes
> maildir_stat_dirs = yes
> mmap_disable = yes
>
>
> On Wed, Nov 14, 2018 at 10:19 AM Aki Tuomi <aki.tuomi at
open-xchange.com
> <mailto:aki.tuomi at open-xchange.com>> wrote:
>
>     It should eventually wind down once all the problems are fixed. Of
>     course if it does not happen, you can always run force-resync for
>     the problem users.
>
>     Aki
>
>     On 14.11.2018 10.08, Adrian M wrote:
>>     Hi,
>>     we upgraded our servers from version 2.2.13 to 2.2.27. After the
>>     upgrade we notice a 10x increase in traffic with the nfs storage
>>     an errors like this in the logfile:
>>
>>     Nov 12 09:48:16 mail dovecot: imap(...): Error: Corrupted index
>>     cache file /.../dovecot.index.cache: invalid record size
>>     Nov 12 09:48:16 mail dovecot: imap(...): Error:
>>     unlink(/.../dovecot.index.cache) failed: No such file or
>>     directory (in mail-cache.c:29)
>>     Nov 12 09:48:16 mail dovecot: imap(...): Error: Corrupted index
>>     cache file /.../dovecot.index.cache: invalid record size
>>     Nov 12 09:48:16 mail dovecot: imap(...): Error: Broken file
>>     /.../dovecot-uidlist line 8: Invalid data:
>>
>>     Is this normal ?
>>     Will the activity wind down ?
>>     Can we do something, like deleting the old dovecot.index* or
>>     dovecot-uidlist files from maildirs, or doing an doveadm
>>     force-refresh for all inboxes ?
>>
>>     Thank you !
>>
>>     Here's my configuration:
>>     # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf
>>     # Pigeonhole version 0.4.16 (fed8554)
>>     # OS: Linux 4.9.0-8-amd64 x86_64 Debian 9.6 nfs
>>     auth_failure_delay = 15 secs
>>     auth_mechanisms = plain login
>>     auth_verbose = yes
>>     auth_worker_max_count = 256
>>     default_client_limit = 40000
>>     default_process_limit = 512
>>     dict {
>>       lastlogin = mysql:/etc/dovecot/mysql/dovecot-dict-lastlogin.conf
>>       quotadict = mysql:/etc/dovecot/mysql/dovecot-dict-quota.conf
>>     }
>>     disable_plaintext_auth = no
>>     first_valid_uid = 100
>>     log_timestamp = "%Y-%m-%d %H:%M:%S "
>>     login_log_format_elements = user=<%u> method=%m rip=%r lip=%l
pid=%p %c
>>     mail_fsync = always
>>     mail_location = maildir://home/virtual//%d/%u
>>     mail_max_userip_connections = 16
>>     mail_nfs_index = yes
>>     mail_nfs_storage = yes
>>     mail_plugins = zlib quota mail_log notify
>>     mail_privileged_group = mail
>>     mailbox_list_index = yes
>>     maildir_stat_dirs = yes
>>     managesieve_notify_capability = mailto
>>     managesieve_sieve_capability = fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric relational
regex imap4flags copy include variables body enotify environment mailbox date
ihave
>>     mmap_disable = yes
>>     namespace inbox {
>>       inbox = yes
>>       location = 
>>       mailbox Drafts {
>>         special_use = \Drafts
>>       }
>>       mailbox Junk {
>>         special_use = \Junk
>>       }
>>       mailbox Sent {
>>         auto = subscribe
>>         special_use = \Sent
>>       }
>>       mailbox "Sent Messages" {
>>         special_use = \Sent
>>       }
>>       mailbox Spam {
>>         auto = subscribe
>>         special_use = \Junk
>>       }
>>       mailbox Trash {
>>         auto = subscribe
>>         special_use = \Trash
>>       }
>>       mailbox virtual/All {
>>         special_use = \All
>>       }
>>       prefix = 
>>     }
>>     passdb {
>>       args = /etc/dovecot/mysql/dovecot-sql.conf
>>       driver = sql
>>     }
>>     plugin {
>>       last_login_dict = proxy::lastlogin
>>       last_login_key = last-login/%u
>>       mail_log_events = delete undelete expunge copy mailbox_delete
mailbox_rename
>>       mail_log_fields = uid box msgid size
>>       quota = dict:user::proxy::quotadict
>>       quota_rule2 = Trash:ignore
>>       quota_rule3 = Spam:ignore
>>       quota_status_nouser = DUNNO
>>       quota_status_overquota = 552 5.2.2 The email account that you
tried to reach is over quota
>>       quota_status_success = DUNNO
>>       quota_warning = storage=95%% quota-warning 95 %u
>>       quota_warning2 = storage=80%% quota-warning 80 %u
>>       sieve = ~/.dovecot.sieve
>>       sieve_before = /etc/dovecot/sieve/default.sieve
>>       sieve_dir = ~/sieve
>>       stats_refresh = 30 secs
>>       stats_track_cmds = yes
>>       trash = /etc/dovecot/dovecot-trash.conf
>>       zlib_save = gz
>>       zlib_save_level = 6
>>     }
>>     protocols = imap sieve pop3 lmtp
>>     service anvil {
>>       client_limit = 20000
>>       unix_listener anvil-auth-penalty {
>>         mode = 00
>>       }
>>     }
>>     service auth {
>>       client_limit = 20000
>>       unix_listener /var/spool/postfix/private/auth {
>>         group = postfix
>>         mode = 0660
>>         user = postfix
>>       }
>>       unix_listener auth-master {
>>         group = mail
>>         mode = 0660
>>         user = vmail
>>       }
>>       user = root
>>       vsz_limit = 1 G
>>     }
>>     service dict {
>>       unix_listener dict {
>>         mode = 0660
>>         user = vmail
>>       }
>>     }
>>     service imap-login {
>>       client_limit = 4096
>>       executable = /usr/lib/dovecot/imap-login
>>       inet_listener imap {
>>         address = *
>>         port = 143
>>       }
>>       inet_listener imaps {
>>         address = *
>>         port = 993
>>       }
>>       process_limit = 4096
>>       process_min_avail = 24
>>       service_count = 100
>>     }
>>     service imap {
>>       executable = /usr/lib/dovecot/imap
>>       process_limit = 4096
>>       process_min_avail = 24
>>       vsz_limit = 1 G
>>     }
>>     service lmtp {
>>       process_min_avail = 24
>>       unix_listener /var/spool/postfix/private/dovecot-lmtp {
>>         group = postfix
>>         mode = 0600
>>         user = postfix
>>       }
>>       vsz_limit = 1 G
>>     }
>>     service managesieve-login {
>>       client_limit = 4096
>>       inet_listener sieve {
>>         port = 4190
>>       }
>>       process_limit = 4096
>>       process_min_avail = 24
>>       service_count = 1
>>     }
>>     service managesieve {
>>       process_limit = 4096
>>       vsz_limit = 1 G
>>     }
>>     service pop3-login {
>>       client_limit = 4096
>>       executable = /usr/lib/dovecot/pop3-login
>>       inet_listener pop3 {
>>         address = *
>>         port = 0
>>       }
>>       inet_listener pop3s {
>>         address = *
>>         port = 995
>>       }
>>       process_limit = 4096
>>       process_min_avail = 24
>>       service_count = 100
>>     }
>>     service pop3 {
>>       executable = /usr/lib/dovecot/pop3
>>       process_limit = 4096
>>       process_min_avail = 24
>>       vsz_limit = 1 G
>>     }
>>     service quota-status {
>>       client_limit = 4096
>>       executable = /usr/lib/dovecot/quota-status -p postfix
>>       process_min_avail = 24
>>       unix_listener /var/spool/postfix/private/quota-status {
>>         group = postfix
>>         mode = 0660
>>         user = postfix
>>       }
>>     }
>>     service quota-warning {
>>       executable = script /usr/local/bin/quota-warning.sh
>>       unix_listener quota-warning {
>>         mode = 0660
>>         user = vmail
>>       }
>>       user = vmail
>>     }
>>
>>     userdb {
>>       args = /etc/dovecot/mysql/dovecot-sql.conf
>>       driver = sql
>>     }
>>     protocol imap {
>>       imap_idle_notify_interval = 4 mins
>>       imap_max_line_length = 64 k
>>       mail_max_userip_connections = 16
>>       mail_plugins = zlib quota mail_log notify trash imap_quota
>>     }
>>     protocol pop3 {
>>       mail_max_userip_connections = 16
>>       mail_plugins = zlib quota mail_log notify
>>       pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
>>       pop3_fast_size_lookups = yes
>>       pop3_no_flag_updates = yes
>>       pop3_uidl_format = %08Xu%08Xv
>>     }
>>     protocol lda {
>>       auth_socket_path = /var/run/dovecot/auth-master
>>       mail_plugins = zlib quota mail_log notify sieve
>>       sendmail_path = /usr/lib/sendmail
>>       syslog_facility = mail
>>     }
>>     protocol sieve {
>>       mail_max_userip_connections = 16
>>       managesieve_max_compile_errors = 5
>>     }
>>     protocol lmtp {
>>       mail_plugins = zlib quota mail_log notify sieve
>>       syslog_facility = mail
>>     }
>-------------- next part --------------
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Adrian M

2018-Nov-14 10:47 UTC

head link

huge increase in storage activity afther dovecot upgrade

Thanks, they are as in example, except for "mailbox_list_index = yes"
witch
is from https://wiki.dovecot.org/PerformanceTuning

On Wed, Nov 14, 2018 at 12:18 PM Aki Tuomi <aki.tuomi at open-xchange.com>
wrote:
> You should review https://wiki2.dovecot.org/NFS to see that the settings
> make sense.
>
> Aki
> On 14.11.2018 12.00, Adrian M wrote:
>
> Thank you !
> I was little concerned that the following settings are not in line with
> the new version:
>
> mail_nfs_index = yes
> mail_nfs_storage = yes
> mail_fsync = always
> mailbox_list_index = yes
> maildir_stat_dirs = yes
> mmap_disable = yes
>
>
> On Wed, Nov 14, 2018 at 10:19 AM Aki Tuomi <aki.tuomi at
open-xchange.com>
> wrote:
>
>> It should eventually wind down once all the problems are fixed. Of
course
>> if it does not happen, you can always run force-resync for the problem
>> users.
>>
>> Aki
>> On 14.11.2018 10.08, Adrian M wrote:
>>
>> Hi,
>> we upgraded our servers from version 2.2.13 to 2.2.27. After the
upgrade
>> we notice a 10x increase in traffic with the nfs storage an errors like
>> this in the logfile:
>>
>> Nov 12 09:48:16 mail dovecot: imap(...): Error: Corrupted index cache
>> file /.../dovecot.index.cache: invalid record size
>> Nov 12 09:48:16 mail dovecot: imap(...): Error:
>> unlink(/.../dovecot.index.cache) failed: No such file or directory (in
>> mail-cache.c:29)
>> Nov 12 09:48:16 mail dovecot: imap(...): Error: Corrupted index cache
>> file /.../dovecot.index.cache: invalid record size
>> Nov 12 09:48:16 mail dovecot: imap(...): Error: Broken file
>> /.../dovecot-uidlist line 8: Invalid data:
>>
>> Is this normal ?
>> Will the activity wind down ?
>> Can we do something, like deleting the old dovecot.index* or
>> dovecot-uidlist files from maildirs, or doing an doveadm force-refresh
for
>> all inboxes ?
>>
>> Thank you !
>>
>> Here's my configuration:
>>
>> # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf
>> # Pigeonhole version 0.4.16 (fed8554)
>> # OS: Linux 4.9.0-8-amd64 x86_64 Debian 9.6 nfs
>> auth_failure_delay = 15 secs
>> auth_mechanisms = plain login
>> auth_verbose = yes
>> auth_worker_max_count = 256
>> default_client_limit = 40000
>> default_process_limit = 512
>> dict {
>>   lastlogin = mysql:/etc/dovecot/mysql/dovecot-dict-lastlogin.conf
>>   quotadict = mysql:/etc/dovecot/mysql/dovecot-dict-quota.conf
>> }
>> disable_plaintext_auth = no
>> first_valid_uid = 100
>> log_timestamp = "%Y-%m-%d %H:%M:%S "
>> login_log_format_elements = user=<%u> method=%m rip=%r lip=%l
pid=%p %c
>> mail_fsync = always
>> mail_location = maildir:*/home/virtual/*%d/%u
>> mail_max_userip_connections = 16
>> mail_nfs_index = yes
>> mail_nfs_storage = yes
>> mail_plugins = zlib quota mail_log notify
>> mail_privileged_group = mail
>> mailbox_list_index = yes
>> maildir_stat_dirs = yes
>> managesieve_notify_capability = mailto
>> managesieve_sieve_capability = fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric relational
regex imap4flags copy include variables body enotify environment mailbox date
ihave
>> mmap_disable = yes
>> namespace inbox {
>>   inbox = yes
>>   location >>   mailbox Drafts {
>>     special_use = \Drafts
>>   }
>>   mailbox Junk {
>>     special_use = \Junk
>>   }
>>   mailbox Sent {
>>     auto = subscribe
>>     special_use = \Sent
>>   }
>>   mailbox "Sent Messages" {
>>     special_use = \Sent
>>   }
>>   mailbox Spam {
>>     auto = subscribe
>>     special_use = \Junk
>>   }
>>   mailbox Trash {
>>     auto = subscribe
>>     special_use = \Trash
>>   }
>>   mailbox virtual/All {
>>     special_use = \All
>>   }
>>   prefix >> }
>> passdb {
>>   args = /etc/dovecot/mysql/dovecot-sql.conf
>>   driver = sql
>> }
>> plugin {
>>   last_login_dict = proxy::lastlogin
>>   last_login_key = last-login/%u
>>   mail_log_events = delete undelete expunge copy mailbox_delete
mailbox_rename
>>   mail_log_fields = uid box msgid size
>>   quota = dict:user::proxy::quotadict
>>   quota_rule2 = Trash:ignore
>>   quota_rule3 = Spam:ignore
>>   quota_status_nouser = DUNNO
>>   quota_status_overquota = 552 5.2.2 The email account that you tried
to reach is over quota
>>   quota_status_success = DUNNO
>>   quota_warning = storage=95%% quota-warning 95 %u
>>   quota_warning2 = storage=80%% quota-warning 80 %u
>>   sieve = ~/.dovecot.sieve
>>   sieve_before = /etc/dovecot/sieve/default.sieve
>>   sieve_dir = ~/sieve
>>   stats_refresh = 30 secs
>>   stats_track_cmds = yes
>>   trash = /etc/dovecot/dovecot-trash.conf
>>   zlib_save = gz
>>   zlib_save_level = 6
>> }
>> protocols = imap sieve pop3 lmtp
>> service anvil {
>>   client_limit = 20000
>>   unix_listener anvil-auth-penalty {
>>     mode = 00
>>   }
>> }
>> service auth {
>>   client_limit = 20000
>>   unix_listener /var/spool/postfix/private/auth {
>>     group = postfix
>>     mode = 0660
>>     user = postfix
>>   }
>>   unix_listener auth-master {
>>     group = mail
>>     mode = 0660
>>     user = vmail
>>   }
>>   user = root
>>   vsz_limit = 1 G
>> }
>> service dict {
>>   unix_listener dict {
>>     mode = 0660
>>     user = vmail
>>   }
>> }
>> service imap-login {
>>   client_limit = 4096
>>   executable = /usr/lib/dovecot/imap-login
>>   inet_listener imap {
>>     address = *
>>     port = 143
>>   }
>>   inet_listener imaps {
>>     address = *
>>     port = 993
>>   }
>>   process_limit = 4096
>>   process_min_avail = 24
>>   service_count = 100
>> }
>> service imap {
>>   executable = /usr/lib/dovecot/imap
>>   process_limit = 4096
>>   process_min_avail = 24
>>   vsz_limit = 1 G
>> }
>> service lmtp {
>>   process_min_avail = 24
>>   unix_listener /var/spool/postfix/private/dovecot-lmtp {
>>     group = postfix
>>     mode = 0600
>>     user = postfix
>>   }
>>   vsz_limit = 1 G
>> }
>> service managesieve-login {
>>   client_limit = 4096
>>   inet_listener sieve {
>>     port = 4190
>>   }
>>   process_limit = 4096
>>   process_min_avail = 24
>>   service_count = 1
>> }
>> service managesieve {
>>   process_limit = 4096
>>   vsz_limit = 1 G
>> }
>> service pop3-login {
>>   client_limit = 4096
>>   executable = /usr/lib/dovecot/pop3-login
>>   inet_listener pop3 {
>>     address = *
>>     port = 0
>>   }
>>   inet_listener pop3s {
>>     address = *
>>     port = 995
>>   }
>>   process_limit = 4096
>>   process_min_avail = 24
>>   service_count = 100
>> }
>> service pop3 {
>>   executable = /usr/lib/dovecot/pop3
>>   process_limit = 4096
>>   process_min_avail = 24
>>   vsz_limit = 1 G
>> }
>> service quota-status {
>>   client_limit = 4096
>>   executable = /usr/lib/dovecot/quota-status -p postfix
>>   process_min_avail = 24
>>   unix_listener /var/spool/postfix/private/quota-status {
>>     group = postfix
>>     mode = 0660
>>     user = postfix
>>   }
>> }
>> service quota-warning {
>>   executable = script /usr/local/bin/quota-warning.sh
>>   unix_listener quota-warning {
>>     mode = 0660
>>     user = vmail
>>   }
>>   user = vmail
>> }
>>
>> userdb {
>>   args = /etc/dovecot/mysql/dovecot-sql.conf
>>   driver = sql
>> }
>> protocol imap {
>>   imap_idle_notify_interval = 4 mins
>>   imap_max_line_length = 64 k
>>   mail_max_userip_connections = 16
>>   mail_plugins = zlib quota mail_log notify trash imap_quota
>> }
>> protocol pop3 {
>>   mail_max_userip_connections = 16
>>   mail_plugins = zlib quota mail_log notify
>>   pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
>>   pop3_fast_size_lookups = yes
>>   pop3_no_flag_updates = yes
>>   pop3_uidl_format = %08Xu%08Xv
>> }
>> protocol lda {
>>   auth_socket_path = /var/run/dovecot/auth-master
>>   mail_plugins = zlib quota mail_log notify sieve
>>   sendmail_path = /usr/lib/sendmail
>>   syslog_facility = mail
>> }
>> protocol sieve {
>>   mail_max_userip_connections = 16
>>   managesieve_max_compile_errors = 5
>> }
>> protocol lmtp {
>>   mail_plugins = zlib quota mail_log notify sieve
>>   syslog_facility = mail
>> }
>>
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