similar to: Problem with zlib plugin and flags

Good evening, folks, Well, here at least. ;) I recently found out by accident about support for gzip compressed mbox files. While this is great for archives to keep wasting of space down to a minimum, unfortunately it is read only -- no support for rw access. Is implementing write access by any chance planned for future releases? Now for the spoiler. :) I mentioned, I found out about this

Hi, I saw the zlib-plugin reference in the alpha4 ChangeLog notes are searched the list for info about it. The only reference I found was from Timo back in March 2005. Questions: 1) Is this going to become a standard part of version 1.0? 2) Any plans or ability to make it read/write to a gzipped mailbox, or is this possible? Or will it always be read-only? 3) How does a mailbox get gzipped?

zlib plugin allows opening gzipped mboxes as read-only mailboxes. However when using it, the mailbox name checks are bypassed so it's possible to open for example "../otheruser/somefile.gz". Only valid gzipped mbox files can be opened, and only if their name ends with ".gz". You can fix this by upgrading to v1.0.rc29 (available soon) or with this patch:

zlib plugin allows opening gzipped mboxes as read-only mailboxes. However when using it, the mailbox name checks are bypassed so it's possible to open for example "../otheruser/somefile.gz". Only valid gzipped mbox files can be opened, and only if their name ends with ".gz". You can fix this by upgrading to v1.0.rc29 (available soon) or with this patch:

You can use mdbox_deleted driver to access mails with refcount 0. See https://wiki2.dovecot.org/MailboxFormat/dbox Aki On 10.11.2020 12.42, Daniel Sch?tze wrote: > > Yesterday I had to recover an e-mail which a user had deleted.? If I > understand this correctly the message was expunged but not purged > (doveadm purge had not been run). > > This e-mail was clearly still in the

Hi! I've followed the guide at http://wiki2.dovecot.org/Plugins/Zlib to try to make Dovecot gzip incomming mails, but it doesn't seem to work. I've made pop/imap read gzipped files, and this seems to work perfectly, but LDA is still saving incomming mails in plain text. There's not too much information out there regarding the zlib module, so I'm not sure where to start

Following these instructions: http://wiki.dovecot.org/Plugins/Zlib I enabled zlib and restarted Dovecot. I made a backup copy of a 68MB mbox file and moved it to a non mail directory. The mbox file is an existing TBird IMAP folder in my UNIX user mail directory. It is an archive of a defunct mailing list. It was a regular IMAP folder prior to attempting this. I was able to access all emails

Hello, I'm trying to get the zlib plugin working on my 2.0 server. I started with an mbox that Dovecot can read just fine. Then I gzipped it, and now Dovecot complains that it's corrupted: Error: Next message unexpectedly corrupted in mbox file /var/lib/vpopmail/domains/memoryhole.net/kyle/Maildir/Archive/Intellego.gz at 1907 Error: Unexpectedly lost From-line from

On 2016-03-10 15:00, Alessio Cecchi wrote: > Il 10/03/2016 10:38, Tom Sommer ha scritto: >> I enabled zlib compression, so new mails are saved compressed. >> >> Now I want to convert the old mails to gzip with the find and gzip >> command, but now I don't know which files are already gzip compressed >> by >> dovecot. > > Simple check if the file

I enabled zlib compression, so new mails are saved compressed. Now I want to convert the old mails to gzip with the find and gzip command, but now I don't know which files are already gzip compressed by dovecot. Shouldn't zlib_save itself add Z to the Maildir flags? As suggested in the compress guide on http://wiki2.dovecot.org/Plugins/Zlib ? -- Tom

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

> On 10/11/2020 20:07 Daniel Sch?tze <dms at cwa.uk.com> wrote: > > > Dear Aki > Thank you. Unfortunately I'm struggling to get the right syntax for this as it looks like someone else was here too > https://dovecot.org/pipermail/dovecot/2018-July/112441.html > The location in my dovecot.conf is > >

I've tried this on both Solaris 8 and SuSE Enterprise 9 (64-bit). I get a assert-crash when using a gzipped mbox folder . OK Logged in. . SELECT test.gz * FLAGS (\Answered \Flagged \Deleted \Seen \Draft $Label4 $Label2 $Label1 $Label3 $Label5) * OK [PERMANENTFLAGS ()] Read-only mailbox. * 167 EXISTS * 0 RECENT * OK [UNSEEN 2] First unseen. * OK [UIDVALIDITY 1096038620] UIDs valid * OK

On 06.01.2018 20:54, Timo Sirainen wrote: > On 5 Jan 2018, at 18.33, Carsten Uppenbrink <info at uppenbrink.net> wrote: >> On 24.12.2017 15:58, Adam Weinberger wrote: >>> Hello, >>> I use the zlib and imap_zlib plugins on FreeBSD. As of 2.3.0, my logs >>> are producing these errors every so often, but AFAICT the messages >>> themselves aren't

On 5 Jan 2018, at 18.33, Carsten Uppenbrink <info at uppenbrink.net> wrote: > > On 24.12.2017 15:58, Adam Weinberger wrote: >> Hello, >> I use the zlib and imap_zlib plugins on FreeBSD. As of 2.3.0, my logs >> are producing these errors every so often, but AFAICT the messages >> themselves aren't getting corrupted. >> Panic: file ostream-zlib.c: line

Hi, I run a small IMAP server for a dozen guys in the office, serving about 55GB of Maildir. I recently became aware of the Zlib plugin ( http://wiki2.dovecot.org/Plugins/Zlib ) and wondered 1. given that there is about zero CPU load on my IMAP server, is enabling the plugin a no-brainer or are there other things (except CPU load) to consider? 2. For enabling the plugin, I suppose you

On 24.12.2017 15:58, Adam Weinberger wrote: > Hello, > > I use the zlib and imap_zlib plugins on FreeBSD. As of 2.3.0, my logs > are producing these errors every so often, but AFAICT the messages > themselves aren't getting corrupted. > > Panic: file ostream-zlib.c: line 36 (o_stream_zlib_close): assertion > failed: (zstream->ostream.finished || >

Hello everyone, Is it possible to configure the zlib plugin to compress the emails in one folder only? I would like to compress the emails when they are stored in my 'Archives' folders and sub folders. Thanks, Andr? Rodier.

Hi, faced with a current space problem on our dovecot 2.2.18 server, I thought about using the zlib plugin. My questions: - is it really as simple as adding the options to the conf files as described in the docs :) ? http://wiki2.dovecot.org/Plugins/Zlib - As this just compresses new messages; dose anybody has a sort of simple cron or whatever script or best practice how to compress existing

Hi, i think i've the same problem as described here: http://www.dovecot.org/list/dovecot/2009-June/040687.html when opening a folder without an index (?) and bzip-compressed files i get following error message: 2010-02-03T14:12:10.026452+01:00 server dovecot: IMAP(user): gzread() failed: PARAM_ERROR 2010-02-03T14:12:10.026477+01:00 server dovecot: IMAP(user): FETCH for mailbox folder