[Dovecot] Migrating with dsync and INBOX.INBOX namespace issue

14 Jul 2012

      I'm working on migrating IMAP users from Mirapoint Message Servers to Dovecot servers. The Mirapoint IMAP server uses INBOX as a namespace for private mailboxes. I created the same namespace in Dovecot, but when I migrate mailboxes dsync seems to ignore/miss the namespace on Mirapoint and I end up with all mailboxes under a INBOX.INBOX hierarchy.
Mirapoint Source Server

OK server.name Mirapoint IMAP4 3.8.3-GA server ready
1 LOGIN test@test.com test
1 OK User logged in
2 NAMESPACE
NAMESPACE (("INBOX." ".")) (("user." ".")) (("" "."))
2 OK Completed
3 LIST "" *
LIST () "." "INBOX"
LIST () "." "INBOX.Draft"
LIST () "." "INBOX.Sent"
LIST () "." "INBOX.Trash"
3 OK Completed

Running Dsync
# doveadm -v -o imapc_host=server.name imapc_user=test@test.com -o imapc_password=test backup -R -u test@test.com imapc:
dsync(test@test.com): Info: INBOX.INBOX.Sent: only in source (guid=7d3c7eaa71cdf47ee8a1192687cda8cd)
dsync(test@test.com): Info: INBOX.INBOX.Draft: only in source (guid=a6a03ff3d6ec9066b46013f4affb109a)
dsync(test@test.com): Info: INBOX.INBOX.Trash: only in source (guid=b36f688eae08506001091708006abe5a)
dsync(test@test.com): Info: INBOX: only in source (guid=c92f64f79f0d1ed01e6d5b314f04886c)
Dovecot Destination Server Post Dsync

OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready.
1 LOGIN test@test.com test
1 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS SPECIAL-USE QUOTA ACL RIGHTS=texk] Logged in
2 NAMESPACE
NAMESPACE (("INBOX." ".")) NIL NIL
2 OK Namespace completed.
3 LIST "" *
LIST (\HasChildren) "." "INBOX"
LIST (\HasNoChildren) "." "INBOX.INBOX.Sent"
LIST (\HasNoChildren) "." "INBOX.INBOX.Trash"
LIST (\HasNoChildren) "." "INBOX.INBOX.Draft"
3 OK List completed.

I noticed that Mirapoint IMAP also advertises a third empty namespace and I was wondering if this was causing it, but even if I explicitly set -n "INBOX." I still have the same issue.
Below is my doveconf -n output:
# 2.1.6: /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 9.0-RELEASE-p3 amd64

auth_cache_negative_ttl = 0
auth_verbose = yes
default_vsz_limit = 512 M
deliver_log_format = subject=%s msgid=%m: %$
disable_plaintext_auth = no
imapc_features = rfc822.size
mail_gid = vmail
mail_home = /mailstore/domains/%d/%n
mail_location = mdbox:~/mdbox
mail_plugins = quota acl mail_log notify
mail_temp_dir = /var/tmp
mail_uid = vmail
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 spamtest
namespace {
inbox = yes
location =
prefix = INBOX.
separator = .
}
passdb {
args = /usr/local/etc/dovecot/dovecot-ldap-passdb.conf
driver = ldap
}
plugin {
acl = vfile:/usr/local/etc/dovecot/global-acls
mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
mail_log_fields = uid box msgid size
quota = dict:User quota::file:%h/.dovecot-quota
quota_warning = storage=95%% quota-warning 95 %u
sieve = ~/.dovecot.sieve
sieve_extensions = +spamtest
sieve_max_redirects = 32
sieve_spamtest_max_value = 10
sieve_spamtest_status_header = X-Spam-Score
sieve_spamtest_status_type = score
}
service auth-worker {
user = $default_internal_user
}
service auth {
client_limit = 5420
unix_listener auth-userdb {
group = vmail
mode = 0600
user = vmail
}
user = $default_internal_user
}
service imap-login {
process_min_avail = 12
service_count = 0
vsz_limit = 512 M
}
service imap {
process_limit = 4096
vsz_limit = 512 M
}
service lmtp {
process_min_avail = 12
user = vmail
}
service pop3-login {
process_min_avail = 12
service_count = 0
vsz_limit = 512 M
}
service pop3 {
process_limit = 1024
vsz_limit = 512 M
}
service quota-warning {
executable = script /usr/local/bin/quota-warning
unix_listener quota-warning {
user = vmail
}
user = vmail
}
ssl = no
userdb {
args = /usr/local/etc/dovecot/dovecot-ldap-userdb.conf
driver = ldap
}
verbose_proctitle = yes
protocol imap {
mail_max_userip_connections = 50
mail_plugins = quota acl mail_log notify imap_quota imap_acl
}
protocol lmtp {
mail_plugins = quota acl mail_log notify sieve
}
Any help would be much appreciated.
Regards, Nikolai.

Nikolai Schupbach

Mirapoint Source Server

Running Dsync

Dovecot Destination Server Post Dsync

Nikolai Schupbach

Mirapoint Source Server

Running Dsync

Dovecot Destination Server Post Dsync

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