Chandran,
From the configuration you sent you have the following setting...
service imap-login {
.
.
.
service_count = 1
.
.
.
}
from http://wiki2.dovecot.org/LoginProcess
It should be...
service imap-login {
service_count = 0
}
For High-performance mode.
And, I would not change any configuration file in /etc/dovecot/conf.d
directory, make all your changes in local.conf
In the above link, here's the High-Performance section:
High-performance mode
You can enable high-performance mode with:
service imap-login {
service_count = 0
#client_limit = $default_client_limit
#process_min_avail = 0
#vsz_limit = 64M
}
service pop3-login {
service_count = 0
}
It works by using a number of long running login processes, each
handling a number of connections. This loses much of the security
benefits of the login process design, because in case of a security hole
(in Dovecot or SSL library) the attacker is now able to see other users
logging in and steal their passwords, read their mails, etc.
*
process_min_avail should be set to be at least the number of CPU
cores in the system, so that all of them will be used.
* Otherwise new processes are created only once an existing one's
connection count reaches client_limit
* Default client_limit * process_limit = 1000*100 = 100k connections
* vsz_limit should be increased to avoid out of memory errors,
especially if you're using SSL/TLS.
Eric
On 7/23/2015 1:01 AM, Chandran Manikandan wrote:
> Dear Eric,
> Please find the attached file FYR . please check and help me to
> resolve it.
>
> On Wed, Jul 22, 2015 at 8:21 PM, Eric Broch <[email protected]
> <mailto:[email protected]>> wrote:
>
>
> Look here http://wiki2.dovecot.org/LoginProcess
>
>
> On 7/22/2015 3:56 AM, Chandran Manikandan wrote:
>> Dear Friends,
>> I have faced below issues since two weeks to till now. Could
>> anyone help me to rectify this issue.
>>
>> Below message retrieve from logs and getting disconnection from
>> Outlook and other email clients.
>>
>> Error Message
>>
>> master: Warning: service(imap-login): process_limit (100)
>> reached, client connections are being dropped
>>
>> My local.conf from dovecot folder
>>
>> protocol imap {
>> imap_client_workarounds = "delay-newmail"
>> mail_max_userip_connections = 20
>> default_process_limit = 300
>> }
>>
>> 10-master.conf
>>
>> default_process_limit = 300
>> default_client_limit = 1000
>>
>> service imap-login {
>> inet_listener imap {
>> # process_limit = 15
>> # client_limit = 300
>> #port = 143
>> }
>> protocol imap {"process_limit = 300"}
>>
>> Please check above config. I have modified in dovecot folder but
>> doesn't reflect the server. Is there anything in toaster issue.
>> could any one help me to solve it.
>>
>> My server toaster is dovecot-2.2.7-0.qt.el6.i686
>> Server is Centos 6.6
>>
>>
>>
>> --
>> *Thanks,*
>> *Manikandan.C*
>> *System Administrator*
>
>
>
>
> --
> *Thanks,*
> *Manikandan.C*
> *System Administrator*
>
>
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