similar to: Hitting wall at 2048 IMAP connections

On 02/03/2015 03:35 PM, Ron Cleven wrote: > We are gradually rolling out Dovecot (IMAP only, no POP3) to our > customer base. We are replicating between a pair of CentOS 7 boxes. All > has been working wonderfully. However, to be sure our rollout continues > to go smoothly, we put together a simple benchmark client program to > fire up X persistent IMAP connections (using hundreds

Hi System debian 8.11 dovecot-2.2.36.4 and I have some warnings in log likes: Warning: Inotify watch limit for user exceeded, disabling. Increase /proc/sys/fs/inotify/max_user_watches cat /proc/sys/fs/inotify/max_user_watches 8192 in sysctl i change #fs.inotify.max_user_watches= 8192 #fs.inotify.max_user_instances = 16384 fs.inotify.max_user_watches= 16384 fs.inotify.max_user_instances =

I posted a few days back asking about configuration issues with a modestly large number of IMAP connections. Several people were kind enough to respond with various ideas. Armed with those ideas and Google, I was able to determine the underlying configuration issues with CentOS 7 and Dovecot 2.2.10. I did some further benchmarking to ensure that we could properly plan our server

Hello, we have the following problem: Nov 3 09:43:33 minerva dovecot: [ID 583609 local0.warning] master: Warning: service(anvil): client_limit reached, client connections are being dropped Nov 3 09:51:33 minerva dovecot: [ID 583609 local0.error] imap-login: Error: net_connect_unix(anvil) failed: Connection refused Nov 3 09:51:33 minerva dovecot: [ID 583609 local0.crit] imap-login: Fatal:

Hi I allready have set 256 on max_user_instances , and in the log i keep seeing Mar 28 10:08:44 mail dovecot: imap(some.username): Warning: Inotify instance limit for user 98 (UID vmail) exceeded, disabling. Increase /proc/sys/fs/inotify/max_user_instances All users use thunderbird 3.1.9 , and from time to time this show in log , with a random user. What can i do to resolve this issue ? my

Hello all! # dovecot --version 2.1.17 Sometimes I have this in the logfile: May 11 16:55:52 master: Warning: service(imap-login): process_limit (100) reached, client connections are being dropped May 11 17:35:03 master: Warning: service(imap-login): process_limit (100) reached, client connections are being dropped May 11 17:36:27 master: Warning: service(imap-login): process_limit (100)

Hello, Timo, last year when you remoted into our server and performed the migration from courier-imap, we ran into this issue, and you solved it by doing: echo 1024 > /proc/sys/fs/inotify/max_user_instances Then you said you were going to solve this permanently by changing the init script... Here is what you said (this is from the skype chat): [2012-06-04 10:40:43 AM] timosirainen:

Maybe I have multiple problems - dunno. I've started seeing the following log lines: Mar 7 07:46:22 bubba dovecot: imap(dmiller at amfes.com): Warning: Inotify instance limit for user 5000 (UID vmail) exceeded, disabling. Increase /proc/sys/fs/inotify/max_user_instances max_user_instances is currently 128. I've tried stopping and restarting dovecot - the message immediately returns.

Hi, After upgrading to dovecot 2.1.12, I see a lot of these errors: # 2.1.12: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-279.14.1.el6.x86_64 x86_64 CentOS release 6.3 (Final) # Filesystem: ext4 with mdbox storage Dec 10 15:21:04 mail dovecot: imap(user at example.org): Error: Cached message size smaller than expected (5010 < 8192) Dec 10 15:21:04 mail dovecot: imap(user at example.org):

I have two servers pointing to an NFS mounted mail spool with dovecot.? Since I recently switched from using Dovecot v1.X, I have been experiencing high CPU use with the two Dovecot servers. I am not certain why they are not well behaved.? Here is the configuration information. This configuration is currently running at a load average of 17. /usr/sbin/dovecot -n # 2.1.15:

I just upgraded my Ubuntu server from 11.10 to 12.04.1 and that upgraded Dovecot to 2.0.19. For some reason I'm getting a lot more (5 times) disconnect in IDLE and inactivity time outs. I'm using only IMAP with two users. Both users access the server from multiple devices, phone, tablet and desktop computer. I had previously set the max_userip_connections to 20 and rarely got the

> On August 3, 2017 at 8:57 PM Alexander Dalloz <ad+lists at uni-x.org> wrote: > > > Am 03.08.2017 um 01:04 schrieb Matt Bryant: > > Hi, > > > > Trying to get rawlog working on dovecot 2.2.31 configured as per > > > > https://wiki2.dovecot.org/Debugging/Rawlog > > > > but > > > > a) it doesnt appear to be loggin anything

I have, but I will be happy to review it once again. On 12/18/18 2:14 PM, admin wrote: > Am Dienstag, den 18.12.2018, 14:06 -0500 schrieb Albert E. Whale, CEH > CHS CISA CISSP: >> >> I have two servers pointing to an NFS mounted mail spool with >> dovecot.? Since I recently switched from using Dovecot v1.X, I have >> been experiencing high CPU use with the two

> On 25/08/2020 14:35 Robert Nowotny <rnowotny at rotek.at> wrote: > > > I get ZLIB Errors after dovecot upgrade from 2.3.10.1 to 2.3.11.3 > > > Aug 21 15:27:34 lxc-imap dovecot: imap(acsida)<63870><jZk...>: Error: Mailbox Sent: UID=40826: read(zlib(/home/vmail/virtualmailboxes/acsida/storage/m.2409)) failed:

Halo, This might seem like another indirect thread. I Monday started new job, first task must replace courier. The job use POP3. and IMAP only for webmail, but must server support 4K POP3 at one times. I see from similar thread current settings not adequate , we will use TLS and if wiki read right Iprotocol So am close in think that need ? service pop3-login { process_limit = 4096 }

Phillip> Users don?t create these folder. The system does based on the Phillip> configuration which is what I have to figure out. Then post your configuration details! And details on how email gets into the system and into Dovecot.

I'm seeing this message in my /var/log/maillog: May 26 12:35:00 agencymail dovecot: IMAP(info at example.com): Inotify instance limit for user exceeded, disabling. Increase /proc/sys/fs/inotify/max_user_instances I rummaged through google, and found : http://www.dovecot.org/list/dovecot-cvs/2008-May/011132.html which says I need to increase /proc/sys/fs/inotify/max_user_instances (no

Hello In my installation the disable_plaintext_auth does not appear to take effect. I can see that the value is correct using doveconf -a but it doesn't change anything. Whenever attempting to log in using IMAP I get this: * BAD [ALERT] Plaintext authentication not allowed without SSL/TLS, but your client did it anyway. If anyone was listening, the password was exposed. ls NO

hi we are using dovecot version 2.2.7 (config file given below) centos 6, qmail, vpopmail, mysql server configuration hex core processor, 16 gb ram 1 X 600 gb 15 k rpm for main drive and 2 X 2000 gb hdd for data (No raid) busy server with around 4000 email ids --- load is around 2 to 10 the issue is that SQUIRRELMAIL webmail users suddenly lose connection while they are working on the webmail.

hi, one customer told us, that he has performance problem in his Thunderbird 3.1.9, while open his sent folder, which has round about 4000 mails in it, and 20k in his Inbox. For example TB, tries to sync the sent-folder list (over SSL) from the sent folder for now over 15min. In the log, I can't see any strange things, so for me, Dovecot works ok. Maybe, I should use better cache options?