similar to: architecture to handle 1000 messages per second?

By default, CentOS v5 requires a user's password when the system wakes up from the screensaver. This can be disabled by each user, but how can I disable this system-wide? Many of my users forget to do this, which results in workstations being locked up. Bob

Hi! Im making a small research about IMAP servers and it's features. As the subject suggests, I want make a shared mailbox, with per user \seen flag to work like a mailin-list works. The reason to use 1 shared folder is simple: Imagine 12k users sending 1KB messages each week, it will be 12+ MB of useless information. Many people told me that IMAP could do this, but now seem that it is a

Hello, Do you think Dovecot could handle millions of active users in a big architecture ? This cluster could be for example (each server is a bi quad Xeon 2.66 Ghz) : - 40 Dovecot servers - 4 LVS - 20 Apache+PHP - 2 Openldap - 20 Postfix + ClamAV + SpamAssassin - 1 NFS Netapps For millions of user it could be multiple different clusters of 40 Dovecot servers with 1 Netapp for each cluster. I

Helo all, I'm working on a migration from qmail+courier+maildrop to postfix +dovecot1.1+lda and today the logs has too many strange messages like this: Jun 12 10:51:22 mailserver03 dovecot: IMAP(xxxxl at xxxx.com.br): Broken file /data/services/dominios/xx.com.br/m/ma/mapel//Maildir/.Sent/dovecot-uidlist line 29: UID larger than next_uid (535 >= 535) Jun 12 10:51:26 mailserver03 dovecot:

Chad M Stewart <cms at balius.com> wrote: > Dovecot 2.2.18 on CentOS 6 > > I have a pair of servers setup with MySQL, Postfix, and Dovecot. Replication is setup and working between the two dovecot instances. > > The problem I'm running into is that a single mailbox receives a lot > of messages, at times the rate is multiple messages per > second. Delivery from

On 08/12/2015 17:19, Chad M Stewart wrote: > What I'm seeing is very high load on the system (40) and queues building on the Postfix side. High load means, that there are a lot of processes waiting to run. The most likely cause for this is not CPU consumption, but I/O wait. Please run vmstat and iostat and post their output. Greetings Daniel -------------- next part -------------- A

Chad M Stewart <cms at balius.com> wrote: > On Aug 12, 2015, at 11:04 AM, Andrzej A. Filip <andrzej.filip at gmail.com> wrote: >> >> > > <..snip..> > >> Could you provide the following info: >> a) mailbox type (maildir/mbox/dbox/...) > > maildir > >> [mail_location in dovecot's config] > >

On Aug 14, 2015, at 1:01 PM, Andrzej A. Filip <andrzej.filip at gmail.com> wrote: > > > Are docecot and postfix located on the same server? > Can postfix access (deliver) directly maildir file directory dovecot uses? > For the moment yes they are on the same server. I designed it to be modular, the various components can be placed on different systems with no

The problem happened again this morning. Removing fsync calls helped, but I'm not sure about leaving that enabled long term. I still believe the problem is multiple dovecot processes trying to write to a single folder at the same time. (If I could run dtrace I might be able to cobble together a script to prove it.) I tried writing a sieve script to direct the messages to a set of folders,

Chad M Stewart <cms at balius.com> wrote: > On Aug 14, 2015, at 1:01 PM, Andrzej A. Filip <andrzej.filip at gmail.com> wrote: > >> >> >> Are docecot and postfix located on the same server? >> Can postfix access (deliver) directly maildir file directory dovecot uses? >> > > For the moment yes they are on the same server. I designed it to be

On Aug 12, 2015, at 11:04 AM, Andrzej A. Filip <andrzej.filip at gmail.com> wrote: > > <..snip..> > Could you provide the following info: > a) mailbox type (maildir/mbox/dbox/...) maildir > [mail_location in dovecot's config] /srv/mail/<domain>/<user-mailbox>/ > b) file system type (ext2/ext3/ext4/fat32/...) > [provided by "df -T"

Hi. Just switched to Dovecot from Courier last week and have been very pleased so far. The conversion was extremely painless, and I only hit a few small configuration issues before I was able to get the server up and running. Since then, I've been quite pleased - Dovecot's been very stable, and a good bit faster than courier as well. However, there's one nice feature from

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 2015-08-14 7:52 AM, Chad M Stewart wrote: > > The problem happened again this morning. Removing fsync calls helped, but I'm not sure about leaving that enabled long term. > > I still believe the problem is multiple dovecot processes trying to write to a single folder at the same time. (If I could run dtrace I might be able to

Hi, i have qmail + vpopmail + dovecot + squirrelmail 0.99.14 on Fedora Core 4. Qmail includes its own pop3 server, and everybody is able to access it from outside. Dovecot is used only locally by SquirrelMail - so everybody can access via webmail. I'd like to make imap directly available from outside, but only for a few selected domains (NOT ip addresses!), while leaving everyone able to

On Aug 12, 2015, at 11:58 AM, Daniel Tr?der <troeder at univention.de> wrote: > On 08/12/2015 17:19, Chad M Stewart wrote: >> What I'm seeing is very high load on the system (40) and queues building on the Postfix side. > High load means, that there are a lot of processes waiting to run. The > most likely cause for this is not CPU consumption, but I/O wait. > >

I just upgraded a server from Courier-IMAP to Dovecot, and I'm seeing some odd behavior. It's probably the result of something I did wrong in my configuration, and I'm hoping someone will let me know the easy fix for it. I have rules set up in Apple Mail to move and copy messages to different folders, some of which are IMAP folders, others on my own system. With

Dovecot 2.2.18 on CentOS 6 I have a pair of servers setup with MySQL, Postfix, and Dovecot. Replication is setup and working between the two dovecot instances. The problem I'm running into is that a single mailbox receives a lot of messages, at times the rate is multiple messages per second. Delivery from Postfix to Dovecot is via tcp based LMTP. When I do 'ps -aef|grep lmtp|wc

-------- Original Message -------- Subject: Re: Dovecot 2.2.16: disappearing messages, mismatched summaries, duplicated messages, excessive full re-downloads From: Timo Sirainen <tss at iki.fi> To: David Gessel <gessel at blackrosetech.com> Date: Sat Apr 18 2015 15:48:28 GMT+0300 (Arabic Standard Time) > No. My best guess is that (your) ZFS+FreeBSD is simply not behaving the way

Hi, Trying to keep abusive/buggy IMAP clients at bay on a number of Dovecot proxy servers, I've reconfigured them to use "mail_max_userip_connections = 50" in the "protocol imap" section, followed by restarting Dovecot. Yet, I'm still seeing 160+ established connections from a single IP address for the same email account. Am I missing anything? # 2.2.27

hi All, I have a srange problem. Before dovecot there was a courier imap and it worked just fine. The client(s) are the same then before, so I think, this is an server side problem. I have a user with Outlook and he uses pop3 and leaves messages on server. Sometimes the messages get downloaded again, when he starts the outlook. Not all, but 7-9 hours back. uidl format is like it's