ok i went through this and the best solution although it is a bit of work
is imapsync
imapsync --host1 --user1 --password1 \
--host2 --user2 --password2 \
--regextrans2 "s,\.,_,g"
see : https://github.com/imapsync/imapsync
note the reg parameter above deal with dot in mailboxes etc
virtual mail requires a database of user data, i made a python script to
step through all the account to sync to the new servers.
It basically deals with the compatibility issues between servers.
Happy Friday !!!
Thanks - paul
Paul Kudla
Scom.ca Internet Services <http://www.scom.ca>
004-1009 Byron Street South
Whitby, Ontario - Canada
L1N 4S3
Toronto 416.642.7266
Main 1.866.411.7266
Fax 1.888.892.7266
Email paul@scom.ca
On 2023-06-09 6:51 a.m., t Seeger wrote:
> Thank you for the link, unfortunately I am missing the crucial clue. I
> get the directories backed up, but I don't get them imported
> properly.... all mails are displayed as unseen. i tried with simple
> pasting and the doveadm import command. Is there a trick to preserve the
> flags? Maybe it is because the old dovecot server uses short username
> without the @ and the domain name and the new one uses the mail address
> to identify the user.
>
> On Thu, Jun 8, 2023 at 3:26 PM aki.tuomi via dovecot
> <dovecot@dovecot.org <mailto:dovecot@dovecot.org>> wrote:
>
> Please see https://doc.dovecot.org/admin_manual/migrating_mailboxes/
> <https://doc.dovecot.org/admin_manual/migrating_mailboxes/>
>
> Aki
>
> -------- Original message --------
> From: tseegerkrb@gmail.com <mailto:tseegerkrb@gmail.com>
> Date: 6/8/23 16:10 (GMT+02:00)
> To: dovecot@dovecot.org <mailto:dovecot@dovecot.org>
> Subject: Migration dovecot server with local users to dovecot with
> virtual mailboxes
>
> Hello,
> we are using a dovecot server with NIS, we want to transfer it to a
> new setup. As backend a mysql server will be used in the future.
> My problem is, if I just copy the maildir or use "doveadm import"
> all mails are flagged as "unseen". How can i preserve the flags?
>
> This is how I have tried it so far.
> root@mail / $ doveadm import -s -u testuser@testdomain.local
> maildir:/tmp/testuser-maildir-230608/Maildir/:INDEX=MEMORY "" "All"
>
> As a "workaround" I tried to change the flags.
> root@mail / $ doveadm -v flags add -u testuser@testdomain.local
> "Seen" "ALL"
> This led partially to the desired success, the mails are shown as
> "seen", but the folders (e.g. Roundcube) still show unread mails.
>
> dovecot -n
> ############################################
> # 2.3.13 (89f716dc2): /etc/dovecot/dovecot.conf
> # Pigeonhole version 0.5.13 (cdd19fe3)
> # OS: Linux 5.10.0-23-cloud-amd64 x86_64 Debian 11.7
> # Hostname: mail.testdomain.local
> auth_mechanisms = plain login
> mail_fsync = always
> mail_gid = vmail
> mail_home = /var/vmail/mailboxes/%d/%n
> mail_location = maildir:~/mail:LAYOUT=fs:INDEX=MEMORY
> mail_privileged_group = vmail
> 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 index ihave duplicate mime foreverypart
> extracttext imapsieve vnd.dovecot.imapsieve
> mmap_disable = yes
> namespace inbox {
> inbox = yes
> location =
> mailbox Drafts {
> auto = subscribe
> special_use = \Drafts
> }
> mailbox Sent {
> auto = subscribe
> special_use = \Sent
> }
> mailbox Spam {
> auto = subscribe
> special_use = \Junk
> }
> mailbox Trash {
> auto = subscribe
> special_use = \Trash
> }
> prefix =
> }
> passdb {
> args = /etc/dovecot/dovecot-sql.conf
> driver = sql
> }
> plugin {
> imapsieve_mailbox1_before =
> file:/var/vmail/sieve/global/learn-spam.sieve
> imapsieve_mailbox1_causes = COPY
> imapsieve_mailbox1_name = Spam
> imapsieve_mailbox2_before =
> file:/var/vmail/sieve/global/learn-ham.sieve
> imapsieve_mailbox2_causes = COPY
> imapsieve_mailbox2_from = Spam
> imapsieve_mailbox2_name = *
> quota = maildir:User quota
> quota_exceeded_message = User %u has exhausted allowed storage space.
> sieve =
> file:/var/vmail/sieve/%d/%n/scripts;active=/var/vmail/sieve/%d/%n/active-script.sieve
> sieve_before = /var/vmail/sieve/global/spam-global.sieve
> sieve_global_extensions = +vnd.dovecot.pipe
> sieve_pipe_bin_dir = /usr/bin
> sieve_plugins = sieve_imapsieve sieve_extprograms
> }
> protocols = imap lmtp sieve
> service auth {
> unix_listener /var/spool/postfix/private/auth {
> group = postfix
> mode = 0660
> user = postfix
> }
> unix_listener auth-userdb {
> group = vmail
> mode = 0660
> user = vmail
> }
> }
> service imap-login {
> inet_listener imap {
> port = 143
> }
> process_min_avail = 1
> service_count = 1
> }
> service lmtp {
> unix_listener /var/spool/postfix/private/dovecot-lmtp {
> group = postfix
> mode = 0660
> user = postfix
> }
> user = vmail
> }
> service managesieve-login {
> inet_listener sieve {
> port = 4190
> }
> }
> ssl = required
> ssl_ca = </etc/dovecot/private/ca-testdomain.local_tls_srv_crt.crt
> ssl_cert = </etc/dovecot/private/mail.testdomain.local_tls_srv_crt.crt
> ssl_cipher_list =
> ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
> ssl_dh = # hidden, use -P to show it
> ssl_key = # hidden, use -P to show it
> ssl_min_protocol = TLSv1.2
> userdb {
> args = /etc/dovecot/dovecot-sql.conf
> driver = sql
> }
> protocol imap {
> imap_idle_notify_interval = 29 mins
> mail_max_userip_connections = 20
> mail_plugins = " quota imap_quota imap_sieve"
> }
> protocol lmtp {
> mail_plugins = " sieve notify push_notification quota"
> postmaster_address = postmaster@testdomain.local
> }
> ############################################
>
> Thanks for your help
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