Hi,
we have our namespace rooted at "INBOX.". Sometimes, users have folders
like "INBOX.INBOX.Sent" or "INBOX.INBOX.INBOX.Sent". I do not know why
these folders are created; I suspect it is due to buggy MUAs.
If a mailbox like INBOX.INBOX.Sent exists, then in some cases Dovecot
counts all messages in INBOX twice.
This behavior can be demonstrated as follows:
1) Create a folder named "INBOX.INBOX.Sent" (using the IMAP CREATE command)
2) Save a message to "INBOX" (in my example the message is 7 MB)
3) dovecot-quota contains:
priv/quota/storage
7129025
priv/quota/messages
1
4) doveadm quota recalc -u user1
5) Now dovecot-quota contains
priv/quota/storage
14258050
priv/quota/messages
2
I.e. the user will experience that his quota fills up very fast.
"doveadm -f flow fetch -u user1 'mailbox guid' ALL" prints:
mailbox=INBOX guid=040ce73645177850497d000040c59ffc
mailbox=INBOX guid=040ce73645177850497d000040c59ffc
However,
"doveadm -f flow fetch -u user1 'mailbox guid' mailbox INBOX" prints the
message only once:
mailbox=INBOX guid=040ce73645177850497d000040c59ffc
How can we prevent this kind of confusion? What I'd like most is
prevent the creation of these weird folders. Most MUAs have problems
listing them properly, especially if both "INBOX.Sent" and
"INBOX.INBOX.Sent" exist.
Dovecot 2.1 does not seem to count anything twice.
Cheers,
Christoph
Config:
# 2.0.21: /usr/local/dovecot/etc/dovecot/dovecot.conf
doveconf: Warning: service auth { client_limit=4096 } is lower than
required under max. load (6224)
# OS: Linux 2.6.32-42-server x86_64 Ubuntu 10.04.4 LTS
disable_plaintext_auth = no
mail_gid = vmail
mail_location = mdbox:~/mail
mail_plugins = quota
mail_uid = vmail
namespace default {
inbox = yes
location =
prefix = INBOX.
separator = .
type = private
}
passdb {
args = scheme=CRYPT username_format=%u
/usr/local/dovecot/etc/dovecot/users
driver = passwd-file
}
plugin {
quota = dict:ROOT::file:%h/dovecot-quota
quota_rule = *:storage=5G
}
protocols = imap pop3
service auth {
unix_listener auth-userdb {
group = vmail
mode = 0660
}
}
service imap {
process_limit = 5000
}
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
args = /usr/local/dovecot/etc/dovecot/users
driver = passwd-file
}
protocol imap {
imap_client_workarounds = tb-extra-mailbox-sep
mail_max_userip_connections = 20
mail_plugins = quota imap_quota
}
And the contents of the "users" file:
user1:{plain}secret:::user1:/mail/users/user1::
--
Christoph Bußenius
Rechnerbetriebsgruppe der Fakultäten Informatik und Mathematik
Technische Universität München
+49 89-289-18519 <> Raum 00.05.040 <> Boltzmannstr. 3 <> Garching
