dsync having problems with @-sign in mailbox names
Hi there
We are running Cyrus-to-Dovecot migrations using dsync on destination Dovecot server (Debian Stretch / latest Dovecot 2.3.7.2 from community repo) like this:
$ doveadm -o mail_fsync=never backup -R -u <username> imapc:
For imapc configuration to connect to remote Cyrus server, see below [1]. While this works great for hundreds of mailaccounts, dsync fails with the following error on accounts with @-sign in mailbox names:
dsync(<username>): Error: Failed to access mailbox INBOX/entrance/admin@example: Invalid mailbox name
I can confirm, Dovecot supports @-sign in mailbox names and no client (tested with Thunderbird, Apple Mail, Roundcube webmail) has issue with this character. Also Cyrus was always supporting this. So I guess this is an issue with dsync. Can we somehow tune charset (UTF-8 ?) in imapc configuration?
Thanks, Philip
[1] /etc/dovecot/conf.d/90-migration.conf:
## IMAP imapc_host = imap.example.com imapc_port = 993 imapc_ssl = imaps imapc_ssl_verify = yes imapc_user = %u imapc_master_user = cyrus imapc_password = **********
imapc_features = rfc822.size fetch-headers mail_prefetch_count = 20 imapc_list_prefix = INBOX
## POP3 pop3c_host = pop3.example.com pop3c_port = 995 pop3c_ssl = pop3s pop3c_ssl_verify = yes pop3c_user = %u pop3c_master_user = cyrus pop3c_password = **********
namespace { prefix = POP3-MIGRATION-NS/ location = pop3c: list = no hidden = yes } protocol doveadm { mail_plugins = $mail_plugins pop3_migration } plugin { pop3_migration_mailbox = POP3-MIGRATION-NS/INBOX }
On 28 Sep 2019, at 12.21, Philip Iezzi via dovecot dovecot@dovecot.org wrote:
Hi there
We are running Cyrus-to-Dovecot migrations using dsync on destination Dovecot server (Debian Stretch / latest Dovecot 2.3.7.2 from community repo) like this:
$ doveadm -o mail_fsync=never backup -R -u <username> imapc:
For imapc configuration to connect to remote Cyrus server, see below [1]. While this works great for hundreds of mailaccounts, dsync fails with the following error on accounts with @-sign in mailbox names:
dsync(<username>): Error: Failed to access mailbox INBOX/entrance/admin@example: Invalid mailbox name
I can confirm, Dovecot supports @-sign in mailbox names and no client (tested with Thunderbird, Apple Mail, Roundcube webmail) has issue with this character. Also Cyrus was always supporting this. So I guess this is an issue with dsync. Can we somehow tune charset (UTF-8 ?) in imapc configuration?
Hi,
can you please try to record imapc rawlogs for such an session? I would like to see what kind of mUTF7 name string Cyrus sends for these folders that have special characters. We have been able to work around some of the broken mUTF7 implementations with some BROKENCHAR magic.
Sami
On 28 Sep 2019, at 11:28, Sami Ketola via dovecot dovecot@dovecot.org wrote:
On 28 Sep 2019, at 12.21, Philip Iezzi via dovecot dovecot@dovecot.org wrote:
Hi there
We are running Cyrus-to-Dovecot migrations using dsync on destination Dovecot server (Debian Stretch / latest Dovecot 2.3.7.2 from community repo) like this:
$ doveadm -o mail_fsync=never backup -R -u <username> imapc:
For imapc configuration to connect to remote Cyrus server, see below [1]. While this works great for hundreds of mailaccounts, dsync fails with the following error on accounts with @-sign in mailbox names:
dsync(<username>): Error: Failed to access mailbox INBOX/entrance/admin@example: Invalid mailbox name
I can confirm, Dovecot supports @-sign in mailbox names and no client (tested with Thunderbird, Apple Mail, Roundcube webmail) has issue with this character. Also Cyrus was always supporting this. So I guess this is an issue with dsync. Can we somehow tune charset (UTF-8 ?) in imapc configuration?
Hi,
can you please try to record imapc rawlogs for such an session? I would like to see what kind of mUTF7 name string Cyrus sends for these folders that have special characters. We have been able to work around some of the broken mUTF7 implementations with some BROKENCHAR magic.
Sami
Hi Sami,
Thanks for your support. I have tried the following... Added this to conf.d/20-imap.conf:
protocol imap { rawlog_dir = /tmp/rawlog/%u }
Then restarted Dovecot, and re-run the following dsync migration:
$ doveadm -o mail_fsync=never backup -R -u <username> imapc: dsync(<username>): Info: imapc(imap.example.com:993): Connected to x.x.x.x:993 (local y.y.y.y:45726) dsync(<username>): Error: Failed to access mailbox INBOX/entrance/admin@example: Invalid mailbox name
Then checked /tmp/rawlog, which is still empty. According to https://wiki.dovecot.org/Debugging/Rawlog, setting rawlog_dir should be the only thing needed, right? What did I do wrong?
I am glad to provide you the raw logs as soon as I can generate them.
Thanks, Philip
On 28 Sep 2019, at 11:48, Philip Iezzi via dovecot dovecot@dovecot.org wrote:
On 28 Sep 2019, at 11:28, Sami Ketola via dovecot dovecot@dovecot.org wrote:
On 28 Sep 2019, at 12.21, Philip Iezzi via dovecot dovecot@dovecot.org wrote:
Hi there
We are running Cyrus-to-Dovecot migrations using dsync on destination Dovecot server (Debian Stretch / latest Dovecot 2.3.7.2 from community repo) like this:
$ doveadm -o mail_fsync=never backup -R -u <username> imapc:
For imapc configuration to connect to remote Cyrus server, see below [1]. While this works great for hundreds of mailaccounts, dsync fails with the following error on accounts with @-sign in mailbox names:
dsync(<username>): Error: Failed to access mailbox INBOX/entrance/admin@example: Invalid mailbox name
I can confirm, Dovecot supports @-sign in mailbox names and no client (tested with Thunderbird, Apple Mail, Roundcube webmail) has issue with this character. Also Cyrus was always supporting this. So I guess this is an issue with dsync. Can we somehow tune charset (UTF-8 ?) in imapc configuration?
Hi,
can you please try to record imapc rawlogs for such an session? I would like to see what kind of mUTF7 name string Cyrus sends for these folders that have special characters. We have been able to work around some of the broken mUTF7 implementations with some BROKENCHAR magic.
Sami
Hi Sami,
Thanks for your support. I have tried the following... Added this to conf.d/20-imap.conf:
protocol imap { rawlog_dir = /tmp/rawlog/%u }
Then restarted Dovecot, and re-run the following dsync migration:
$ doveadm -o mail_fsync=never backup -R -u <username> imapc: dsync(<username>): Info: imapc(imap.example.com:993): Connected to x.x.x.x:993 (local y.y.y.y:45726) dsync(<username>): Error: Failed to access mailbox INBOX/entrance/admin@example: Invalid mailbox name
Then checked /tmp/rawlog, which is still empty. According to https://wiki.dovecot.org/Debugging/Rawlog, setting
rawlog_dirshould be the only thing needed, right? What did I do wrong? I am glad to provide you the raw logs as soon as I can generate them.Thanks, Philip
okay, I probably just need to configure rawlog as post-logins script...
service imap { executable = imap postlogin } service pop3 { executable = pop3 postlogin } service postlogin { executable = script-login -d rawlog unix_listener postlogin { } }
Need to change trains now, will try later.
Best, Philip
On 28 Sep 2019, at 12.52, Philip Iezzi via dovecot dovecot@dovecot.org wrote:
Hi Sami,
Thanks for your support. I have tried the following... Added this to conf.d/20-imap.conf:
protocol imap { rawlog_dir = /tmp/rawlog/%u }
just add setting imapc_rawlog_dir=/path/to/%u
and make sure the directory exists and is writable.
Sami
On 28 Sep 2019, at 12.55, Sami Ketola sami.ketola@dovecot.fi wrote:
On 28 Sep 2019, at 12.52, Philip Iezzi via dovecot dovecot@dovecot.org wrote:
Hi Sami,
Thanks for your support. I have tried the following... Added this to conf.d/20-imap.conf:
protocol imap { rawlog_dir = /tmp/rawlog/%u }
just add setting imapc_rawlog_dir=/path/to/%u
and make sure the directory exists and is writable.
and make it global setting. not just for specific protocol. And if you want to do that instead then it would be protocol doveadm not imap.
Sami
participants (2)
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Philip Iezzi
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Sami Ketola