I see, it seems it wasn't compiled with maildir storage engine.

About running another dovecot instance on the same box, I never tried it myself, but I guess you could have your production version (which needs to support maildir, otherwise you won't be able to access the mailboxes after the migration) in /usr (as distros usually do), and install your customized version (with support for maildir and dbox for the migration) in /usr/local.

If you go this way, you will have to reference the dovecot version you're addressing with the full path (/usr/bin/doveadm or /usr/local/bin/doveadm), or you'll have to rely on your $PATH environment variable. You also need to take into account to separate the /etc directories for both instances, because you'll probably need slightly different configurations.

Cheers

On 2019-06-24 10:34, Adam Raszkiewicz via dovecot wrote:

Yeah, I think dovecot was a custom compiled build

Version is 2.2.18

Config:

# 2.2.18: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.8 # OS: Linux 2.6.32-754.14.2.el6.x86_64 x86_64 CentOS release 6.10 (Final) xfs auth_master_user_separator = * auth_mechanisms = plain login dict { acl = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } disable_plaintext_auth = no lda_mailbox_autosubscribe = yes log_path = /var/log/dovecot.log mail_home = mdbox:/var/homedirs/%2Mu/%2.2Mu/%u mail_location = mdbox:/var/mailboxes/%2Mu/%2.2Mu/%u mail_plugins = acl mail_shared_explicit_inbox = yes 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 index ihave duplicate vnd.dovecot.pipe vnd.dovecot.filter vnd.dovecot.execute namespace { list = children location = mdbox:/var/mailboxes/%%2Mu/%%2.2Mu/%%u prefix = shared/%%u/ separator = / subscriptions = yes type = shared } namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox INBOX { auto = subscribe } mailbox Junk { special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = subscriptions = yes } passdb { args = /etc/dovecot/mastership-sql.conf driver = sql master = yes pass = yes } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { acl = vfile acl_defaults_from_inbox = yes acl_shared_dict = proxy::acl sieve_after = /etc/dovecot/sieve/99-file-qvera-ccda.sieve sieve_after2 = /etc/dovecot/sieve/98-notify-biz-address.sieve sieve_after3 = /etc/dovecot/sieve/97-mdn-processed.sieve sieve_execute_bin_dir = /etc/dovecot/sieve-execute sieve_execute_socket_dir = sieve-execute sieve_extensions = +vnd.dovecot.execute +vnd.dovecot.filter +vnd.dovecot.pipe sieve_filter_bin_dir = /etc/dovecot/sieve-filter sieve_filter_socket_dir = sieve-filter sieve_pipe_bin_dir = /etc/dovecot/sieve-pipe sieve_pipe_socket_dir = sieve-pipe sieve_plugins = sieve_extprograms } postmaster_address = postmaster@test2.domain.com sendmail_path = /sbin/sendmail service dict { unix_listener dict { user = dovecot } } service imap-postlogin { executable = script-login /etc/dovecot/imappostlogin user = $default_internal_user } service imap { executable = imap imap-postlogin } ssl = no userdb { args = uid=dovecot gid=dovecot home=/var/mailboxes/%%2Mu/%%2.2Mu/%%u driver = static } protocol lmtp { mail_plugins = acl sieve } protocol lda { mail_plugins = acl sieve } protocol imap { mail_plugins = acl imap_acl }

and --build-options:

Build options: ioloop=epoll notify=inotify ipv6 openssl io_block_size=8192 Mail storages: shared mdbox raw fail SQL drivers: mysql Passdb: checkpassword pam passwd passwd-file shadow sql Userdb: checkpassword nss passwd prefetch passwd-file sql

At that point my question is if I can run another dovecot build on the same box? I knew I can run the same instance but as is this a custom build I want to have something generic just to use for migration purposes.

Thanks, Adam

On 6/21/19, 4:45 PM, "dovecot on behalf of Germán Herrera via dovecot" wrote:

Well, judging by the error message it appears like dovecot hasn't 

been compiled with support for maildir, which is strange because I don't see any way to disable in the compile-time options.

Are you using the precompiled package from the distro or compiling
dovecot by yourself? Could you share the output of "dovecot
--build-options" and "dovecot --version"?

Thanks!

On 2019-06-21 17:17, Adam Raszkiewicz wrote:

> Hi German,
>
> I have tried your way and getting the same error message:
>
> dsync(user@domain.com): Debug: Namespace inbox: type=private, 

prefix=, > sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes > location=maildir:~/Maildir > > dsync(user@domain.com): Error: User initialization failed: Namespace > '': Unknown mail storage driver maildir > > Thoughts? Missing dovecot library, something in the configuration? > > Thanks, > > Adam > > FROM: dovecot dovecot-bounces@dovecot.org on behalf of Germán Herrera > via dovecot dovecot@dovecot.org > ORGANIZATION: SES Sistemas Electrónicos S.A. > REPLY-TO: Germán Herrera g.herrera@ses.com.ar > DATE: Friday, June 21, 2019 at 3:10 PM > TO: Adam Raszkiewicz araszkiewicz@medallies.com > CC: "dovecot@dovecot.org" dovecot@dovecot.org > SUBJECT: Re: Mail migration problem > > Hi Adam > > Can you try: "doveadm sync -u <user> maildir:~/Maildir" > > My mailboxes are in sdbox (I have "mail_location = > sdbox:~/sdbox:ALT=/mnt/archive/%u/sdbox") and after running that > command I managed to successfully migrate the user mailbox to maildir. > Also that is the command I used to migrate all my user's maildirs to > sdbox some time ago. > > Regards > > --- > > Germán Herrera > Responsable de IT > Ingeniería > SES Sistemas Electrónicos S.A.| Espinosa 1045 (C1405AMM) | Buenos Aires > | Argentina > W: +54 11 54530000 | Email: g.herrera@ses.com.ar > > ------------------------- > > Denos su opinión aquí > > On 2019-06-21 11:58, Adam Raszkiewicz via dovecot wrote: > >> I'm trying to migrate mdbox to maildir based on >> https://wiki.dovecot.org/Migration/MailFormat >> >> * Modified dovecot.conf and set >> mail_location=maildir:/tmp/destination/mailboxes/ >> * Then I had run >> >> /mnt/testmail/bin/dsync -Dv -u user@domain.com mirror >> mdbox:/source/mailboxes/user@domain.com >> >> but that did nothing. Then I have >> >> * Modified dovecot.conf and set mail_location=mdbox:/source/mailboxes >> * Then I had run >> >> /mnt/testmail/bin/dsync -Dv -u user@domain.com mirror >> mdbox:/tmp/destination/mailboxes/user@domain.com >> >> that copied over user@domain.com mailbox from the source to the >> destination location. As that was working I have tried to run >> >> /mnt/testmail/bin/dsync -Dv -u user@domain.com mirror >> maildir:/tmp/destination/mailboxes/user@domain.com >> >> but that got an error: >> >> dsync(user@domain.com): Debug: Namespace inbox: type=private, prefix=, >> sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes >> location=maildir:/mnt/testmail/mailboxes >> >> dsync(user@domain.com): Error: User initialization failed: Namespace >> '': Unknown mail storage driver maildir >> >> First problem is that based on example #2 from above provided syntax >> in https://wiki.dovecot.org/Migration/MailFormat is incorrect or for >> some reason is not working for me as it should for example #1. >> >> Second issue is not recognizing maildir format - what about that? >> Docecot has some missing libraries? >> >> Thanks, >> >> Adam