[Dovecot] imapc problem

[FUSTE Emmanuel]

Le 13/05/2014 19:28, FUSTE Emmanuel a écrit :
> hello,
>
> I have some trouble when trying to migrate from another imap server to
> dovecot with imapc/dsync/doveadm.
>
> when running "doveadm -o imapc_user=foo -o imapc_password=bar backup -R
> -u localuser imapc:" all is ok.
>
> But when running "doveadm -o imapc_user=foo -o imapc_password=bar sync
> -R -u localuser imapc:", all local mods are overwritten. For example
> deleting a message or moving it to trash and it reappear in INBOX (and
> disappear from trash if moved there).
> If I try without the reverse flag "-R", local delete reappear two times
> after two or more sync.
> If I try without the reverse flag "-R", a message moved to trash is
> propagated to trash too, but reappear as many times as you "sync" on the
> two sides in the INBOX.
> With other users, first "backup -R"  is ok but on next sync or backup
> try, I get :
>
> dsync(other_user): Error: Mailbox INBOX sync: mailbox_delete failed: INBOX can't be deleted.
>
>
> Other IMAP server is CriticalPath 8.5.137.
>
> Any clue ??
>
> Emmanuel.
>
> Dovecot conf :
>
>    2.2.12.12 (03196f188677+): /etc/dovecot/dovecot.conf
> # OS: Linux 3.11.0-19-generic x86_64 Ubuntu 12.04.4 LTS
> auth_master_user_separator = *
> auth_username_format = %u
> disable_plaintext_auth = no
> doveadm_password = ****************
> imapc_features = rfc822.size fetch-headers
> imapc_host = my_old_imap_server
> imapc_user = %u
> lda_mailbox_autocreate = yes
> listen = *
> mail_gid = vmail
> mail_location = maildir:~/Maildir
> mail_plugins = quota notify replication
> mail_prefetch_count = 20
> 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
> namespace {
>     hidden = no
>     inbox = yes
>     list = yes
>     location =
>     prefix =
>     separator = /
>     subscriptions = yes
>     type = private
> }
> namespace {
>     hidden = no
>     inbox = no
>     list = children
>     location = maildir:%%h/Maildir:INDEXPVT=~/Maildir/shared/%%u
>     prefix = shared/%%u/
>     separator = /
>     subscriptions = no
>     type = shared
> }
> passdb {
>     args = /etc/dovecot/dovecot-master-ldap.conf.ext
>     driver = ldap
>     master = yes
> }
> passdb {
>     args = /etc/dovecot/dovecot-ldap.conf.ext
>     driver = ldap
> }
> plugin {
>     acl = vfile
>     acl_anyone = allow
>     acl_shared_dict =file:/appli/vmail/shared-mailboxes
>     quota = dict:userquota::file:/appli/vmail/local_userquota/%u/dovecot-quota
>     quota_rule = *:storage=100M
>     quota_rule2 = INBOX:storage=+20%%
>     quota_rule3 = Trash:storage=+10%%
>     sieve = ~/.dovecot.sieve
>     sieve_dir = ~/sieve
> }
> protocols = imap sieve
> service aggregator {
>     fifo_listener replication-notify-fifo {
>       user = vmail
>     }
>     unix_listener replication-notify {
>       user = vmail
>     }
> }
> service auth {
>     unix_listener auth-userdb {
>       group = vmail
>       mode = 0660
>     }
> }
> service doveadm {
>     inet_listener {
>       port = 12345
>     }
>     user = vmail
> }
> service replicator {
>     process_min_avail = 1
>     unix_listener replicator-doveadm {
>       mode = 0666
>     }
> }
> ssl = no
> userdb {
>     args = /etc/dovecot/dovecot-users-ldap.conf.ext
>     driver = ldap
> }
> protocol lda {
>     mail_plugins = quota sieve
> }
> protocol imap {
>     mail_plugins = quota imap_quota
> }

Some news:
I tried many things, switching to sdbox, not using "imapc_features = 
rfc822.size fetch-headers", disabling useless options for a simple test 
setup etc... with no luck.
I switched to isync/mbsync with success in imap to imap mode, syncing 
all mailboxes/expunge/mailbox creation for each user.

It would be great if dovecot/imapc could be fixed to do it natively.
Please tell me if I could help: logs, tests, etc...

Emmanuel.