[Dovecot] Dovecot: pipe() failed: Too many open files

[Fasil]

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 <mailadmin at 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.