similar to: migration to dovecot pop3

hi centos 6 64 bit hex core processor with hyperthreading ie display shows 12 cores 16 gb ram 600 gb 15000 rpm drive we are having around 4000 users on a server i wish to allow 1500 pop3 and 1500 imap connections simultaneously. need help regarding the settings to handle the above imap-login, pop3-login imap pop3 service settings i recently i got an error imap-login: Error: read(imap)

----- Original Message ----- From: Tony Morehen [mailto:tmorehen at ajmconsulting.ca] To: dovecot at dovecot.org Sent: Sat, 12 Sep 2015 17:57:27 -0400 Subject: Re: concerning dovecot settings for high volume server You may be running up against Linux system/user limits. Run $ cat /proc/sys/kernel/pid_max and $ ulimit -a That should give some insight into your problem. On 12/09/2015 2:53 PM,

thanks very much urban. this was very helpful. i have around 12500 users spread over 3 independent servers each having around 4000+ users i am using qmailtoaster, vpopmail, spamassassin and dovecot. in future i am planning to consolidate all using a HA cluster. if it is ok with you could you kindly share some information about your email server configuration. if you do not wish to put it on the

hi we are using using qmail toaster with dovecot pop3 and imap client outlook and thunderbird works fine in case of several ipad / mac email clients imap works fine but pop3 logins are not working with 110 port my dovecot config file is given below could somebody help please # Settings for 'stock' qmail-toaster disable_plaintext_auth = no default_login_user = vpopmail

hi all i use qmail toaster. i recently changed over to dovecot. posting below my evaluation on the same my machine dual core dual xeon 5140 processor, with 4 gb ram, centos linux with qmailtoaster i had setup a qmail tap account which backups up data for a client of mine mailbox size over 30 gb setup dovecot with squirrelmail and logged in it had over one hundred and thirty nine thousand

hi i am using dovecot for pop3 and imap along with qmail toaster i had recently changed over from a 32 bit system to a 64 bit system. i use squirrelmail. the issue i face is that when the user inserts an invalid password then the message he gets is connection dropped by imap server (instead of invalid userid or password) such a message confuses the user. my earlier 32 bit version used to

"Rajesh M" <24x7server at 24x7server.net> writes: > during peak times here are the results for connections > > [root at ns1 domains]# doveadm who |grep imap |wc -l > username # proto (pids) (ips) > 631 > [root at ns1 domains]# doveadm who |grep pop3 |wc -l > username # proto (pids)

St?phane Cottin writes: > A typical .qmail file : > > | /usr/bin/dspam --client --deliver=stdout --user "$EXT@$USER" | /usr/bin/preline -f /usr/lib/dovecot/dovecot-lda -d "$EXT@$USER" -a "$EXT@$USER" -m "$EXT2" > > When dspam segfault or is killed, preline receive an empty content and > only pass to dovecot-lda two headers ( Return-Path

Hello, I recently migrated to Dovecot from Courier-IMAP and i'm very happy with the IMAP Performance and Dovecot in general. The server is running qmail-ldap and i'm still using the qmail pop3 daemon for the POP3 users. Because i want to get rid of qmail completely (switching to exim) i just tried to replace the qmail pop3 daemon with dovecot too. Immediately after the migration the

Hi, I'm working with dovecot 1.0.beta2 for pop3 only and have set index=memory, so no indizes are created on the disk. pop3_uidl_format is set to %f. The maildirs are located on an nfs-share. So generally, this setup is very similar to what qmail-popup and qmail-pop3d does. However, everytime I'm switching from qmail-pop3d to dovecot, the system load increases from less than 2 to more

hi i am using dovecot version 1.2.11 with qmail toaster is there a way to log the number of current imap connections at a given time using dovecot log format ? thanks rajesh

Hello, I would like to set up a POP account which also forwards email elsewhere. In qmail for example it is easy to set up by creating a dot qmail file inside the users mailbox. How can this be done with Postfix? For awareness I'm using Postfix + Dovecot for POP3 authentication. Thanks, Duncan

----- Original Message ----- From: Christian Balzer [mailto:chibi at gol.com] To: dovecot at dovecot.org Cc: 24x7server at 24x7server.net Sent: Fri, 10 Feb 2017 17:58:58 +0900 Subject: On Fri, 10 Feb 2017 01:13:20 +0530 Rajesh M wrote: > hello > > could somebody with experience let me know the dovecot config file settings to handle around 1500 simultaneous connections over pop3 and

Hi to all, my question is what is benefit implementing LMTP service replacing LDA i have dovecot 2.1.8 with vpoipmail+qmail and about 500 users now i'm using LDA and i'm interested on LMTP service. Thanks in advance -- */Davide Marchi /Teorema Ferrara Srl /(Tel: /**/+39 0532 783161)/**/ (Fax: +/**/39 0532 783368/**/)/**//**/ /**//**/Davide.Marchi at mail.cgilfe.it

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.

Rajesh M wrote: > i wish to improve the performance further by caching the logins. > current the same is kept disable because when user's change passwords > then they are not able to immediately login with the new password for > some time. How to solve this issue. Dovecot shouldn't be doing that. According to https://wiki2.dovecot.org/Authentication/Caching Data is

thank you for guidance, just to recap the issue was about squirrelmail giving a wrong message : "connection dropped by imap server" instead of "invalid user or password" as advised i connected using command line on both my old and new servers, and have posted the details including the output of dovevcot -n. 1) command prompt login. i put wrong password telnet x.x.x.x 143

hello could somebody with experience let me know the dovecot config file settings to handle around 1500 simultaneous connections over pop3 and 1500 connection over imap simultaneously. my server 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) thanks rajesh my current config file settings as such # 2.2.7:

christian the servers i currently own are dell servers. The servers i plan to buy are Dell R530, 2U rack servers with 8 x 3.5 inch drives, with 64 gb ram each, Hardware raid. I am thinking of 2 X 300 gb ssds raid1 and 6 x 2 tb drives in raid10 for data. I do not have any experience in setting up drdb (that would be my next step) ... primarily using standalone servers with hardware level

[dovecot-2.3.2.1] I have dovecotrunning icw postfixandhave IMAP and POP3 available to retrieve mail. Can you tell me how I can configure Dovecot in order to force certain users to use POP3 (download messages) only? Thanks, Jos -------------- next part -------------- An HTML attachment was scrubbed... URL: