[Dovecot] Latest Quota Optimizations and Sieve

[Thomas Leuxner]

With the latest HG Quota code cleanups there seem to be hicups with
Sieve/LMTP. Please see excerpt below. Sieve processing fails, though
quota is within limits:

[...]
sieve: info: started log at Apr 05 09:06:36.
error: msgid=<20110405070128.315AF3173F0 at eul0300650.eu.verio.net>:
failed to store into mailbox 'INBOX': Quota exceeded (mailbox for user
is full).

[...]

Apr  5 09:06:36 spectre dovecot: lmtp(32005, alias at domain.tld): Error:
3X25MXy/mk0FfQAAqZii3w: sieve: script
/var/vmail/domains/domains.tld/alias/.dovecot.sieve failed with
unsuccessful implicit keep (user logfile
/var/vmail/domains/domains.tld/alias/.dovecot.sieve.log may reveal
additional details)

Fetch User quota:

$ doveadm quota get -u alias at domain.tld
Quota name
Type     Value   Limit %
user
STORAGE 151085 5242880 2
user
MESSAGE   4118       - 0

[ doveconf -n ]

# 2.0.11 (230458801916): /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.1
auth_verbose = yes
mail_location = mdbox:~/mdbox
mail_plugins = acl quota
namespace {
  hidden = no
  inbox = yes
  location =
  prefix =
  separator = /
  type = private
}
namespace {
  list = yes
  location = mdbox:/var/vmail/public
  prefix = Public/
  separator = /
  subscriptions = no
  type = public
}
passdb {
  args = username_format=%u /var/vmail/auth.d/%d/passwd
  driver = passwd-file
}
plugin {
  acl = vfile:/var/vmail/conf.d/%d/acls:cache_secs=300
  mail_log_events = expunge mailbox_delete
  quota = dict:user::file:%h/mdbox/dovecot-quota
  quota_rule = *:storage=1GB
  quota_rule2 = Trash:storage=+10%%
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
  sieve_global_dir = /var/vmail/conf.d/%d/sieve
}
protocols = imap lmtp
quota_full_tempfail = yes
service auth-worker {
  user = doveauth
}
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
  user = doveauth
}
service imap-login {
  inet_listener imap {
    address = 1.2.3.4
    port = 143
  }
  inet_listener imaps {
    port = 0
  }
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0660
    user = postfix
  }
}
ssl_cert = </etc/ssl/certs/host_domain_tld_2010.crt
ssl_key = </etc/ssl/private/host_domain_tld_2010.key
syslog_facility = local1
userdb {
  args = username_format=%u /var/vmail/auth.d/%d/passwd
  driver = passwd-file
}
verbose_proctitle = yes
protocol lmtp {
  mail_plugins = acl quota sieve
}
protocol imap {
  mail_plugins = acl quota imap_acl imap_quota mail_log notify
}
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