similar to: Migration to multi-dbox and SiS

We will be deploying a replacement Dovecot server soon, and we are planning to use maildir for the primary storage, but with an archive namespace using mdbox (or perhaps sdbox), and SIS. Our backup servers and (luke)warm spare server need to obtain full copies of the mail store. For the maildirs I know I can simply use rsync (we already use it here). I'm a little wary of using rsync with

> Probably not the answer you want - but I would strongly suggest using > Dovecot replication.? Dovecot replication Just Works - so don't reinvent > the wheel when Timo provided such a polished tool already.? Okay, thanks, I'll look at replication for the warm spare. Although we do use shared folders, which your link below says don't work properly. > And based on > my

Ok... Now that I've got the niggling issues resolved, on to bigger and better things. I want to convert everyone from Maildir to dbox and enable SIS (our users use a lot of large attachments), and after some reading/googling, I think it may be better to use dsync instead of rsync for the actual migration after all since it will do this at the same time as the syncing. If I'm not

I think a few people have complained about this combination being somewhat broken, resulting in bogus "cached message size wrong" errors sometimes. This fixes it: http://hg.dovecot.org/dovecot-2.0/rev/9b2931607063

On 14 Mar 2018, 20:42 +0100, Aki Tuomi <aki.tuomi at dovecot.fi>, wrote: > > > On 14 March 2018 at 21:17 Nick Rosier < nick+dovecot at bunbun.be> wrote: > > > > > > Hi, > > > > I'm currently running a small home-server with Dovecot. A long time ago > > I configured it with SIS enabled. I would like to stop using SIS. > > > >

Hi! I'm not sure is it the same as described by Andrew Lewis, this is whay i'm posting. Log is: 2011-03-31T17:40:08.369598+02:00 hermes dovecot: imap-login: Login: user=<marcin at mejor.pl>, method=PLAIN, rip=62.121.127.119, lip=193.238.12.139, mpid=19221, TLS 2011-03-31T17:40:08.684562+02:00 hermes dovecot: imap(marcin at mejor.pl): Error: Corrupted dbox file

Hi, I use sis to deduplicate attachments, here is my `doveconf -n` ------------ auth_cache_size = 10 M auth_failure_delay = 5 secs auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb auth_ssl_username_from_cert = yes auth_username_format = %Ln default_vsz_limit = 512 M lmtp_rcpt_check_quota = yes mail_attachment_detection_options = add-flags-on-save mail_attachment_dir =

Hi, I'm currently running a small home-server with Dovecot. A long time ago I configured it with SIS enabled. I would like to stop using SIS. If I remove sis from mail_attachment_fs will the old mails that are stored in SIS-storage still be accessible? How can I convert all mailboxes to stop using SIS and store attachments back in the mails? Rgds, N.

What would be involved in implementing SIS within Dovecot? A new or modified mailbox format? -- Daniel

I am interested in finding out your experiences with using the dbox format (especially mdbox) if you use this format. I am contemplating changing my maildir setup to mdbox but I still need to make a case for it against maildir which has become a de-facto standard and provides sort of a secure basis in case of software changes. Your input will be appreciated. -- Andreas Kasenides Senior IT

I recently set up SiS and imported a large chunk of mail. I've noticed one or two instances of this in the logs: Mar 28 09:03:50 mail dovecot: imap(xxx at yyy.zz): Error: Attachment file /mailstore/attachments/ce/73/ce737a45fe07495e2ae6466f9e381a30d5ec300406f11269d79bd5608cc0c922-822b3d2df67f8e4d7f5000009501e12a larger than expected (252218) Mar 28 14:52:34 mail dovecot: pop3(zzz at xxx.yy):

I'm facing some issues on mdbox based backups. Backups are failing with dbox corruption messages. SiS is the greatest advantage though. However backups integrity is very important. If SiS/Deduplication is not a requirement stick to Maildir. Regards DP -----Original Message----- From: dovecot [mailto:dovecot-bounces at dovecot.org] On Behalf Of Gedalya Sent: 20 April 2018 08:19 To: dovecot at

It's apparent I have some level of corruption in my mailboxes - something to do with the combination of mdbox, sis, and zlib. I should note that I know I have a mix of compressed and raw messages - if that makes any difference in identifying the problems. I think I need to somehow regenerate the mailboxes with issues. Is there a suggestion for how to accomplish this? Should I perhaps use

Hello Dovecoters, I am using dovecot-2.2.10-8.el7.x86_64 on RHEL 7.4 When I backup mdboxes (using SIS) using this command doveadm -Dv -o plugin/quota= sync -1f -u user1 at user.com mdbox:/mailbackup/user1 mails get backedup but all m files are not copied. Last file copied is m.4 If I run the command again I get below error I tried with doveadm backup command as well (many times).

On Wed Apr 24 2019 04:12:30 GMT-0400 (Eastern Standard Time), Daniel Miller via dovecot <dovecot at dovecot.org> wrote: > If you've got good hardware, including a proper UPS, I'd recommend dbox > (my server is presently using sdbox). With large mailboxes and > file-based backups you'll benefit from mdbox. When reliability is the #1 > concern above anything else - use

Hello, I've got a Dovecot virtual email setup using maildir as the mailbox format. I am wondering from others who have chosen dbox a comparison between maildir and dbox or those who have migrated from one format to another. I am wondering if changing to dbox would be beneficial? Thanks. Dave.

On 2012-03-24 7:49 AM, Timo Sirainen <tss at iki.fi> wrote: > This is already optionally done in v2.0+dbox. MIME attachments can be > stored in plain binary form if they can be reconstructed back into > their original form. It doesn't break any signed stuff. Hey Timo, Splitting this off into a separate thread... On the question of the existing SIS capability for

Hello Actually we use MBOX format for all our IMAP access but users complain they cannot create subfolders in imap folders, of course they cannot because of MBOX format ... I need gurus advices on changing mailbox format Maildir of Dbox ? What would be the safest way to go ? Note : we extensively use Thunderbird here. Thanks

Just a note to myself and whoever else cares, should be added to wiki once it has its own page about this: With single-dbox messages can be copied with hard linking. This means that there can be multiple files that point to the same attachment file. The attachment is now deleted only once the mail file's link count drops to zero, so this works fine.. ..until someone goes and starts manually

Since changeset 8a63f621bd2e I'm one step closer to the perfect working setup. I'm sharing one GID per domain, all it's alias names and accounts. So I can use: mail_attachment_dir = /srv/mail/.SiS/%{gid} In order to avoid permission trouble I've set fs ACL on the .SiS dir: ,--[ getfacl srv/mail/.SiS ]-- | # file: srv/mail/.SiS | # owner: root | # group: root | user::rwx |