I'm using RHEL6 instead of ubuntu, but check the startup scripts. In RHEL's case, the following file is sourced, so I updated it instead of the startup scripts.

cat /etc/sysconfig/dovecot
# Here you can specify your dovecot command line options.
#
#OPTIONS=""
ulimit -n 4096
ulimit -u 5120

In addition, I had to also up the max allowed processes in the dovecot config. 2.x and 1.x are different on this.

http://wiki1.dovecot.org/LoginProcess <-1.x method


Jack



On 10/17/2012 6:16 PM, Fasil wrote:
Thanks Frank.
Followed the URL and could not find any luck.

Is there a way to change the value of 'max open files' of dovecot.
I have tried to set the value in /etc/default/dovecot by setting ulimit. But the value is not getting applied.
Could anyone help on this regard.

Fasil.

On 08/16/2012 09:17 AM, Frank Bonnet wrote:
hello

here some useful informations

http://posidev.com/blog/2009/06/04/set-ulimit-parameters-on-ubuntu/

Envoyé de mon iPhone.


Le 16 août 2012 à 02:52, Fasil <mailad...@cubixys.com> a écrit :

Dear all,

Thank you all for such a wonderful support. Hats off to all :)

Few times I came across imap login issues where new users will not be allowed to login.
/var/log/mail.err shows the error below
Aug 12 07:57:46 mail dovecot: dovecot: pipe() failed: Too many open files Aug 12 07:57:46 mail dovecot: dovecot: Temporary failure in creating login processes, slowing down for now Aug 12 07:58:46 mail dovecot: dovecot: pipe() failed: Too many open files Aug 12 07:59:46 mail dovecot: dovecot: pipe() failed: Too many open files Aug 12 08:00:46 mail dovecot: dovecot: pipe() failed: Too many open files

I have a dovecot (V 1.2.9) +postfix (V 2.7.0) setup on ubuntu 10.04

# ulimit -Hn
1024

# ulimit -Sn
1024

# cat /proc/sys/fs/file-max
1238548

# cat /proc/`pidof dovecot`/limits | grep 'Max open'
Max open files            1024                 1024 files

Please advice how to get rid off this.

Fasil.



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