[Dovecot] zlib plugin nad moving mails, bug?
Hi,
Recently I gzipped mails older than 30 days in our users' maildirs. I used find and gzip. Gzip added 'Z' at the end of the filename and everything seemed to work fine, users did not notice any difference in performance (yet :-), and I saved about 30% of our mail storage space.
There seems to be a problem when moving gzipped messages from one folder to another though. Dovecot drops the Z flag, moved messages are not processed by the zlib plugin and email clients end up showing garbage.
Is there something wrong with my config, or did I encounter a bug?
dovecot -n follows:
# 1.0.13: /etc/dovecot/dovecot.conf base_dir: /var/run/dovecot/ log_path: /var/log/dovecot.log protocols: imap imaps pop3s ssl_ca_file: /etc/certs/certum-chain.crt ssl_cert_file: /etc/certs/wild.dfqs.pl.crt ssl_key_file: /etc/certs/wild.dfqs.pl.key ssl_cipher_list: ALL:!LOW:!MEDIUM login_dir: /var/run/dovecot/login login_executable(default): /usr/lib64/dovecot/imap-login login_executable(imap): /usr/lib64/dovecot/imap-login login_executable(pop3): /usr/lib64/dovecot/pop3-login login_greeting: imap.dfqs.pl ready. login_process_per_connection: no login_processes_count: 5 login_max_processes_count: 32 max_mail_processes: 4096 verbose_proctitle: yes mail_location: maildir:~/mail:INDEX=/var/lib/dovecot/indexes/%Ln mail_debug: yes maildir_copy_with_hardlinks: yes maildir_copy_preserve_filename: yes mail_executable(default): /usr/local/lib64/dovecot-post-login-imap.sh mail_executable(imap): /usr/local/lib64/dovecot-post-login-imap.sh mail_executable(pop3): /usr/local/lib64/dovecot-post-login-pop3.sh mail_plugins(default): imap_quota trash quota acl zlib mail_plugins(imap): imap_quota trash quota acl zlib mail_plugins(pop3): quota mail_plugin_dir(default): /usr/lib64/dovecot/plugins/imap mail_plugin_dir(imap): /usr/lib64/dovecot/plugins/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/plugins/pop3 mail_log_max_lines_per_sec: 0 imap_client_workarounds(default): outlook-idle tb-extra-mailbox-sep imap_client_workarounds(imap): outlook-idle tb-extra-mailbox-sep imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh namespace: type: private separator: / inbox: yes namespace: type: public separator: / prefix: Public/ location: maildir:/var/vmail/Public:CONTROL=~/Public/control:INDEX=~/Public/index namespace: type: shared separator: / prefix: Shared/ location: maildir:/var/vmail/Shared:CONTROL=~/Shared/control:INDEX=~/Shared/index auth default: verbose: yes debug: yes worker_max_count: 512 passdb: driver: pam args: dovecot userdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: root group: vmail master: path: /var/run/dovecot/auth-master mode: 432 user: root group: vmail plugin: quota: maildir:storage=12582912:ignore=Trash acl: vfile: trash: /etc/dovecot/dovecot-trash.conf
On Fri, 2008-07-18 at 16:14 +0200, Mateusz Kijowski wrote:
Recently I gzipped mails older than 30 days in our users' maildirs. I used find and gzip. Gzip added 'Z' at the end of the filename and everything seemed to work fine, users did not notice any difference in performance (yet :-), and I saved about 30% of our mail storage space.
There seems to be a problem when moving gzipped messages from one folder to another though. Dovecot drops the Z flag, moved messages are not processed by the zlib plugin and email clients end up showing garbage.
Is there something wrong with my config, or did I encounter a bug?
..
maildir_copy_with_hardlinks: yes
Hardlink copying is broken with zlib plugin. v1.1 works differently and it works there (although non-hardlink copying was broken there, fixed only in hg).
The docs at http://wiki.dovecot.org/MainConfig?highlight=%28ssl_listen%29 aren't clear but I was wondering if I can have IMAP listening on port 143 and port 144, for example, on the same machine?
Regards, KAM
On Sep 8, 2008, at 10:56 PM, Kevin A. McGrail wrote:
The docs at http://wiki.dovecot.org/MainConfig?highlight=%28ssl_listen%29 aren't clear but I was wondering if I can have IMAP listening on
port 143 and port 144, for example, on the same machine?
With v1.1, yes:
listen = *:143, *:144
BTW. Don't post to the list by replying to an existing message, it
breaks message threading.
This was a bug in version 1.0 which is now corrected in version 1.1.rc6 by looking at the file header instead of the Z flag.
http://dovecot.org/pipermail/dovecot-news/2008-May/000069.html
Regards,
Nuno
Mateusz Kijowski wrote:
Hi,
Recently I gzipped mails older than 30 days in our users' maildirs. I used find and gzip. Gzip added 'Z' at the end of the filename and everything seemed to work fine, users did not notice any difference in performance (yet :-), and I saved about 30% of our mail storage space.
There seems to be a problem when moving gzipped messages from one folder to another though. Dovecot drops the Z flag, moved messages are not processed by the zlib plugin and email clients end up showing garbage.
Is there something wrong with my config, or did I encounter a bug?
dovecot -n follows:
# 1.0.13: /etc/dovecot/dovecot.conf base_dir: /var/run/dovecot/ log_path: /var/log/dovecot.log protocols: imap imaps pop3s ssl_ca_file: /etc/certs/certum-chain.crt ssl_cert_file: /etc/certs/wild.dfqs.pl.crt ssl_key_file: /etc/certs/wild.dfqs.pl.key ssl_cipher_list: ALL:!LOW:!MEDIUM login_dir: /var/run/dovecot/login login_executable(default): /usr/lib64/dovecot/imap-login login_executable(imap): /usr/lib64/dovecot/imap-login login_executable(pop3): /usr/lib64/dovecot/pop3-login login_greeting: imap.dfqs.pl ready. login_process_per_connection: no login_processes_count: 5 login_max_processes_count: 32 max_mail_processes: 4096 verbose_proctitle: yes mail_location: maildir:~/mail:INDEX=/var/lib/dovecot/indexes/%Ln mail_debug: yes maildir_copy_with_hardlinks: yes maildir_copy_preserve_filename: yes mail_executable(default): /usr/local/lib64/dovecot-post-login-imap.sh mail_executable(imap): /usr/local/lib64/dovecot-post-login-imap.sh mail_executable(pop3): /usr/local/lib64/dovecot-post-login-pop3.sh mail_plugins(default): imap_quota trash quota acl zlib mail_plugins(imap): imap_quota trash quota acl zlib mail_plugins(pop3): quota mail_plugin_dir(default): /usr/lib64/dovecot/plugins/imap mail_plugin_dir(imap): /usr/lib64/dovecot/plugins/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/plugins/pop3 mail_log_max_lines_per_sec: 0 imap_client_workarounds(default): outlook-idle tb-extra-mailbox-sep imap_client_workarounds(imap): outlook-idle tb-extra-mailbox-sep imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh namespace: type: private separator: / inbox: yes namespace: type: public separator: / prefix: Public/ location: maildir:/var/vmail/Public:CONTROL=~/Public/control:INDEX=~/Public/index namespace: type: shared separator: / prefix: Shared/ location: maildir:/var/vmail/Shared:CONTROL=~/Shared/control:INDEX=~/Shared/index auth default: verbose: yes debug: yes worker_max_count: 512 passdb: driver: pam args: dovecot userdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: root group: vmail master: path: /var/run/dovecot/auth-master mode: 432 user: root group: vmail plugin: quota: maildir:storage=12582912:ignore=Trash acl: vfile: trash: /etc/dovecot/dovecot-trash.conf
Dnia piątek, 18 lipca 2008, Nuno Lopes napisał:
This was a bug in version 1.0 which is now corrected in version 1.1.rc6 by looking at the file header instead of the Z flag.
Yet another reason to upgrade to 1.1...
participants (5)
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Kevin A. McGrail
-
Mateusz Kijowski
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Mateusz Kijowski
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Nuno Lopes
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Timo Sirainen