Doveadm Backup (other) issues

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Gingko

7 Jun 2020 7 Jun '20

3:13 p.m.

Hello,

I also have issues using Dovecot Backup.

I am trying to Backup (or possibly Sync - one way) a single user IMAP account from a remote server, unknown type, to my own server.

For that purpose, I defined the following parameters :

imapc_host = <host name> imapc_user = <user name> imapc_password = <password> imapc_features = rfc822.size

(<user name> has format: name@example.com, and <host name> is the name of the imap remote server that I use for getting mails)

… and then I issued the following command:

doveadm backup -R -u imapc:

... but doing this, I get the following answer:

dsync(<user name>): Info: imapc(<host name>:143): Connected to <host IP address>:143 (local 192.168.1.2:52940) dsync(<user name>): Error: Failed to initialize user: namespace configuration error: Namespace mail/ can't have alias_for= to a different storage (different root dirs)

How can I solve this?

If there is something not matching between servers, I may eventually change configuration on my side, but I think I would first have to know which feature(s) I have to know from the remote server in order to create the matching one on my server.

Is there a way to list all relevant data coming from the remote server?

Also:

Doing this, is it necessary that the source user name be the same as the destination user name? Is it possible to backup an IMAP account to a user account having a completely different name?

Regards,

Gingko

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John Stoffel

7 Jun 7 Jun

5:20 p.m.

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"Gingko" == Gingko ldiff001@gingko.ovh writes:

Gingko> I also have issues using Dovecot Backup.

Gingko> I am trying to Backup (or possibly Sync - one way) a single Gingko> user IMAP account from a remote server, unknown type, to my Gingko> own server.

I think this is the key problem here, doveadm only talks to dovecot servers, both source and destination. You might want to try the tool 'imapsync' instead. I'd get it from the github site, or see if it's packaged on your client end.

https://github.com/imapsync/imapsync

This is a much simpler way to pull down a single IMAP account.

John

Sami Ketola

8 Jun 8 Jun

10:33 a.m.

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On 7. Jun 2020, at 18.20, John Stoffel john@stoffel.org wrote:

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"Gingko" == Gingko ldiff001@gingko.ovh writes:

Gingko> I also have issues using Dovecot Backup.

Gingko> I am trying to Backup (or possibly Sync - one way) a single Gingko> user IMAP account from a remote server, unknown type, to my Gingko> own server.

I think this is the key problem here, doveadm only talks to dovecot servers, both source and destination. You might want to try the tool 'imapsync' instead. I'd get it from the github site, or see if it's packaged on your client end.

This is incorrect. Doveadm dsync can be used to pull mails from remote imap server that is not dovecot.

...

https://github.com/imapsync/imapsync

This is a much simpler way to pull down a single IMAP account.

.. but imapsync does not migrate all data.

Sami

John Stoffel

4:39 p.m.

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"Sami" == Sami Ketola Sami.Ketola@Open-Xchange.com writes:

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On 7. Jun 2020, at 18.20, John Stoffel john@stoffel.org wrote:

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> "Gingko" == Gingko ldiff001@gingko.ovh writes:

Gingko> I also have issues using Dovecot Backup.

...
Gingko> I am trying to Backup (or possibly Sync - one way) a single Gingko> user IMAP account from a remote server, unknown type, to my Gingko> own server.

...
I think this is the key problem here, doveadm only talks to dovecot servers, both source and destination. You might want to try the tool 'imapsync' instead. I'd get it from the github site, or see if it's packaged on your client end.

Sami> This is incorrect. Doveadm dsync can be used to pull mails from Sami> remote imap server that is not dovecot.

Thanks for teaching more something new!

...

...
https://github.com/imapsync/imapsync

This is a much simpler way to pull down a single IMAP account.

Sami> .. but imapsync does not migrate all data.

In what way? I've found that using imapsync worked well to get data out of Lotus Notes and into a regular Unix mbox file format when I've used it in the past. Admittedly not pushing into a local dovecot instance.

John

Sami Ketola

9 Jun 9 Jun

9:44 a.m.

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On 8. Jun 2020, at 17.39, John Stoffel john@stoffel.org wrote:

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"Sami" == Sami Ketola mailto:Sami.Ketola@Open-Xchange.com> writes:

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On 7. Jun 2020, at 18.20, John Stoffel john@stoffel.org wrote:

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>> "Gingko" == Gingko ldiff001@gingko.ovh writes:

Gingko> I also have issues using Dovecot Backup.

...
Gingko> I am trying to Backup (or possibly Sync - one way) a single Gingko> user IMAP account from a remote server, unknown type, to my Gingko> own server.

...
I think this is the key problem here, doveadm only talks to dovecot servers, both source and destination. You might want to try the tool 'imapsync' instead. I'd get it from the github site, or see if it's packaged on your client end.

Sami> This is incorrect. Doveadm dsync can be used to pull mails from Sami> remote imap server that is not dovecot.

Thanks for teaching more something new!

...
...
https://github.com/imapsync/imapsync https://github.com/imapsync/imapsync

This is a much simpler way to pull down a single IMAP account.

Sami> .. but imapsync does not migrate all data.

In what way? I've found that using imapsync worked well to get data out of Lotus Notes and into a regular Unix mbox file format when I've used it in the past. Admittedly not pushing into a local dovecot instance.

imapsync uses IMAP APPEND to store the mails on target system. There is no way over IMAP to set the mail UID. So with imapsync you will lose mail->uid pairing.

Not sure if there is other data that you lose, but for most of the migrations that alone is a total stopper for imapsync.

Sami

Sami Ketola

8 Jun 8 Jun

10:32 a.m.

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On 7. Jun 2020, at 16.13, Gingko ldiff001@gingko.ovh wrote:

Hello,

I also have issues using Dovecot Backup.

I am trying to Backup (or possibly Sync - one way) a single user IMAP account from a remote server, unknown type, to my own server.

For that purpose, I defined the following parameters :

imapc_host = <host name> imapc_user = <user name> imapc_password = <password> imapc_features = rfc822.size

(<user name> has format: name@example.com mailto:name@example.com, and <host name> is the name of the imap remote server that I use for getting mails)

… and then I issued the following command:

doveadm backup -R -u mailto:name@example.com> imapc:

... but doing this, I get the following answer:

dsync(<user name>): Info: imapc(<host name>:143): Connected to <host IP address>:143 (local 192.168.1.2:52940) dsync(<user name>): Error: Failed to initialize user: namespace configuration error: Namespace mail/ can't have alias_for= to a different storage (different root dirs)

How can I solve this?

If there is something not matching between servers, I may eventually change configuration on my side, but I think I would first have to know which feature(s) I have to know from the remote server in order to create the matching one on my server.

Is there a way to list all relevant data coming from the remote server?

Also:

Doing this, is it necessary that the source user name be the same as the destination user name? Is it possible to backup an IMAP account to a user account having a completely different name?

Nope. Source and destination usernames can be different. Please post your doveconf -n as this is probably an error on your local config.

Sami

Gingko

11 Jun 11 Jun

9:58 p.m.

Hello,

Sorry for the reply delay, I had to worry about something else …

Here is my *doveconf -n*:

# 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () # OS: Linux 4.19.0-6-amd64 x86_64 Debian 10.4 # Hostname: /[my-host-name]/ auth_debug = yes auth_debug_passwords = yes auth_verbose = yes auth_verbose_passwords = yes imapc_features = rfc822.size fetch-headers imapc_host = /[remote-imap-host]/ imapc_password = # hidden, use -P to show it imapc_user = /[my-remote-user-name]/@/[with-domain]/ log_path = /var/log/dovecot.log mail_debug = yes mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_prefetch_count = 20 mail_privileged_group = mail namespace compat1 { alias_for = hidden = yes list = no location = prefix = mail/ separator = / } namespace compat2 { alias_for = hidden = yes list = no location = prefix = Mail/ separator = / } namespace inbox { inbox = yes location = mailbox "&AMk-l&AOk-ments envoy&AOk-s" { special_use = \Sent } mailbox "&AMk-l&AOk-ments supprim&AOk-s" { special_use = \Trash } mailbox Brouillons { special_use = \Drafts } mailbox "Courrier ind&AOk-sirable" { special_use = \Junk } prefix = } passdb { driver = pam } passdb { args = scheme=MD5-CRYPT username_format=%u /etc/dovecot/users driver = passwd-file } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve }

ssl_ca =

There is certainly something trivial there, but I'm not very used to advanced usage of Dovecot.

Regards,

Gingko

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Le 08/06/2020 à 10:32, Sami Ketola a écrit :

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On 7. Jun 2020, at 16.13, Gingko mailto:ldiff001@gingko.ovh> wrote:

Hello,

I also have issues using Dovecot Backup.

I am trying to Backup (or possibly Sync - one way) a single user IMAP account from a remote server, unknown type, to my own server.

For that purpose, I defined the following parameters :

imapc_host = <host name> imapc_user =<user name> imapc_password = <password> imapc_features = rfc822.size

(<user name> has format: name@example.com mailto:name@example.com, and <host name> is the name of the imap remote server that I use for getting mails)

… and then I issued the following command:

doveadm backup -R -u mailto:name@example.com> imapc:

... but doing this, I get the following answer:

dsync(<user name>): Info: imapc(<host name>:143): Connected to <host IP address>:143 (local 192.168.1.2:52940) dsync(<user name>): Error: Failed to initialize user: namespace configuration error: Namespace mail/ can't have alias_for= to a different storage (different root dirs)

How can I solve this?

If there is something not matching between servers, I may eventually change configuration on my side, but I think I would first have to know which feature(s) I have to know from the remote server in order to create the matching one on my server.

Is there a way to list all relevant data coming from the remote server?

Also:

Doing this, is it necessary that the source user name be the same as the destination user name? Is it possible to backup an IMAP account to a user account having a completely different name?

Nope. Source and destination usernames can be different. Please post your doveconf -n as this is probably an error on your local config.

Sami

Gingko

10:06 p.m.

Hello,

Sorry for the reply delay, I had to worry about something else â€¦

Here is my *doveconf -n*:

   # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf
   # Pigeonhole version 0.5.4 ()
   # OS: Linux 4.19.0-6-amd64 x86_64 Debian 10.4
   # Hostname:/[my-host-name]/
   auth_debug = yes
   auth_debug_passwords = yes
   auth_verbose = yes
   auth_verbose_passwords = yes
   imapc_features = rfc822.size fetch-headers
   imapc_host =/[remote-imap-host]/
   imapc_password = # hidden, use -P to show it
   imapc_user =/[my-remote-user-name]/@/[with-domain]/
   log_path = /var/log/dovecot.log
   mail_debug = yes
   mail_location = mbox:~/mail:INBOX=/var/mail/%u
   mail_prefetch_count = 20
   mail_privileged_group = mail
   namespace compat1 {
     alias_for =
     hidden = yes
     list = no
     location =
     prefix = mail/
     separator = /
   }
   namespace compat2 {
     alias_for =
     hidden = yes
     list = no
     location =
     prefix = Mail/
     separator = /
   }
   namespace inbox {
     inbox = yes
     location =
     mailbox "&AMk-l&AOk-ments envoy&AOk-s" {
       special_use = \Sent
     }
     mailbox "&AMk-l&AOk-ments supprim&AOk-s" {
       special_use = \Trash
     }
     mailbox Brouillons {
       special_use = \Drafts
     }
     mailbox "Courrier ind&AOk-sirable" {
       special_use = \Junk
     }
     prefix =
   }
   passdb {
     driver = pam
   }
   passdb {
     args = scheme=MD5-CRYPT username_format=%u /etc/dovecot/users
     driver = passwd-file
   }
   plugin {
     sieve =file:~/sieve;active=~/.dovecot.sieve
   }
   
   ssl_ca = </etc/letsencrypt/live/default/chain.pem
   ssl_cert = </etc/letsencrypt/live/default/cert.pem
   ssl_dh = # hidden, use -P to show it
   ssl_key = # hidden, use -P to show it
   userdb {
     driver = passwd
   }
   userdb {
     args = username_format=%u /etc/dovecot/users
     driver = passwd-file
   }

There is certainly something trivial there, but I'm not very used to advanced usage of Dovecot.

Regards,

Gingko

...

Le 08/06/2020 Ã 10:32, Sami Ketola a Ã©crit :

...
On 7. Jun 2020, at 16.13, Gingko mailto:ldiff001@gingko.ovh> wrote:

Hello,

I also have issues using Dovecot Backup.

I am trying to Backup (or possibly Sync - one way) a single user IMAP account from a remote server, unknown type, to my own server.

For that purpose, I defined the following parameters :

imapc_host = <host name> imapc_user =<user name> imapc_password = <password> imapc_features = rfc822.size

(<user name> has format: name@example.com mailto:name@example.com, and <host name> is the name of the imap remote server that I use for getting mails)

â€¦ and then I issued the following command:

doveadm backup -R -u mailto:name@example.com> imapc:

... but doing this, I get the following answer:

dsync(<user name>): Info: imapc(<host name>:143): Connected to <host IP address>:143 (local 192.168.1.2:52940) dsync(<user name>): Error: Failed to initialize user: namespace configuration error: Namespace mail/ can't have alias_for= to a different storage (different root dirs)

How can I solve this?

If there is something not matching between servers, I may eventually change configuration on my side, but I think I would first have to know which feature(s) I have to know from the remote server in order to create the matching one on my server.

Is there a way to list all relevant data coming from the remote server?

Also:

Doing this, is it necessary that the source user name be the same as the destination user name? Is it possible to backup an IMAP account to a user account having a completely different name?

Nope. Source and destination usernames can be different. Please post your doveconf -n as this is probably an error on your local config.

Sami

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Gingko
Gingko
John Stoffel
Sami Ketola
Sami Ketola