Hierarchy separator and LAYOUT=FS change

11 Oct 2016


      Hello,
I stumbled across a 5-year-old post on the dovecot list about changing the dovecot hierarchy separator to enable shared mailboxes (http://www.dovecot.org/list/dovecot/2011-January/056201.html http://www.dovecot.org/list/dovecot/2011-January/056201.html).
At the moment I’m stuck in a pretty similar situation. Migrated from courier to dovecot 2 years ago and preserved the dot-separator.
Because I’m using the e-mail adress as a username, the dots for folder separation and the dots in the email adresses getting messed up -
I do have a pretty small mailserver with about 150 accounts. The Maildir filestructur of a typical mail account looks like this:
drwx------  2 vmail vmail  4096 Oct 10 20:02 cur
drwx------  5 vmail vmail  4096 Oct  3 07:48 .Daten.Administration
drwx------  5 vmail vmail  4096 Oct  3 09:51 .Daten.Anfragen, Werbung
drwx------  5 vmail vmail  4096 Oct  3 08:02 .Daten
drwx------  5 vmail vmail  4096 Oct  6 09:57 .Daten.Intern
drwx------  5 vmail vmail  4096 Oct  3 08:03 .Daten.Intern.Fahrzeuge
drwx------  5 vmail vmail  4096 Oct  6 12:57 .Daten.Intern.Infos, FileMaker etc
drwx------  5 vmail vmail  4096 Oct  3 09:19 .Daten.Intern.Sonstiges
drwx------  5 vmail vmail  4096 Oct  3 07:47 .Daten.Kunden
drwx------  5 vmail vmail  4096 Sep 16 08:29 .Daten.Lieferanten
drwx------  5 vmail vmail  4096 Oct  3 08:28 .Daten.Marketing
drwx------  2 vmail vmail  4096 Oct 10 20:02 new
drwx------  5 vmail vmail  4096 Oct 10 18:00 .Sent
drwx------  5 vmail vmail  4096 Oct 10 18:00 .Spam
drwx------  5 vmail vmail  4096 Oct 10 18:00 .Trash
When changing the separator in my inbox namespace the documentation mentions that the filestructur doesn’t change. This means I will get the same problems when using shared boxes with email adresses as usernames. I definitly need to change to maildir:~/Maildir:LAYOUT=fs
When changing to LAYOUT=fs i need to convert all the mailboxes manually, is that correct? Is dsync is the way to go?
Or is it better to leave the separator and change to a different username schema (without dots in it) and advise the clients to change their credentials?
I know there are people out there who successfully converted this - but I can’f find that many information about this subject.
doveconf -n:
# 2.1.7: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.11
auth_mechanisms = plain login
auth_verbose = yes
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
listen = *
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c
mail_gid = 5000
mail_location = maildir:~/Maildir
mail_plugins = zlib quota acl
mail_uid = 5000
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
namespace inbox {
inbox = yes
location =
mailbox Drafts {
auto = subscribe
special_use = \Drafts
}
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
}
prefix = INBOX.
separator = .
}
passdb {
args = /etc/dovecot/dovecot-ldap.conf
driver = ldap
}
plugin {
acl = vfile
acl_shared_dict = file:/var/spool/postfix/virtual/shared-mailboxes
quota = maildir:User quota
quota_exceeded_message = 4.2.2 Mailbox full
quota_rule = *:storage=1G
quota_rule2 = INBOX.Trash:storage=+100M
quota_rule3 = INBOX.Spam:ignore
quota_warning = storage=95%% quota-warning 95 %u
sieve = ~/.dovecot.sieve
sieve_before = /var/lib/dovecot/sieve/default.sieve
sieve_dir = ~/sieve
sieve_max_actions = 32
sieve_max_redirects = 4
sieve_max_script_size = 1M
sieve_quota_max_scripts = 0
sieve_quota_max_storage = 0
}
protocols = " imap lmtp sieve pop3"
service auth {
group = dovecot
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0660
user = postfix
}
unix_listener auth-master {
group = vmail
mode = 0660
user = vmail
}
user = dovecot
}
service lmtp {
unix_listener lmtp {
mode = 0666
}
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
inet_listener sieve_deprecated {
port = 2000
}
process_min_avail = 1
service_count = 1
vsz_limit = 64 M
}
ssl_cert = http://startssl-onnet.ch/-chain.crt
ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA:AES256-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-RSA-CAMELLIA256-SHA:CAMELLIA128-SHA:CAMELLIA256-SHA:ECDHE-RSA-DES-CBC3-SHA:DES-CBC3-SHA:!SSLv2
ssl_key = mailto:postmaster@onnet.ch
}
protocol imap {
mail_plugins = zlib quota acl imap_quota imap_acl
}
protocol sieve {
info_log_path = /var/log/sieve.log
log_path = /var/log/sieve.log
mail_max_userip_connections = 10
managesieve_implementation_string = Dovecot Pigeonhole
managesieve_logout_format = bytes=%i/%o
managesieve_max_compile_errors = 5
managesieve_max_line_length = 65536
}
… parts of the ldap config
user_attrs = homeDirectory=home=/var/spool/postfix/virtual/%$,uidNumber=uid,gidNumber=gid,quota=quota_rule=*:bytes=%$
user_filter = (&(objectClass=CourierMailAccount)(mail=%u))
… my shared configuration is currently commented out.
# namespace {
#   type = shared
#   separator = .
#   prefix = shared.%%u.
#   location = maildir:%h/Maildir:INDEX=~/Maildir/shared/%%u
#   subscriptions = yes
#   list = children
#}
thanks in advance for any help
Sincerely,
Simeon - onnet.ch http://onnet.ch/

Simeon Ott

Simeon Ott

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